C4

Mr. Carbon 2.0 C4 Speargun in High-Modulus Carbon Fiber

Mr. Carbon 2.0 is a monocoque speargun made entirely from high-modulus carbon fiber, designed to deliver light weight and excellent hydrodynamics. The design uses a cuttlefish-bone profile tapered toward the tip, with shapes and volumes engineered to provide perfect balance in the water and maximize maneuverability during spearfishing.

Technical Features and Design

• Compact Muzzle designed to reduce drag, improve accuracy, and optimize shaft trajectory control.
• Equipped with two line guides in AISI 316 stainless steel, one reversible for single- or double-band setups, ensuring pull parallel to the shaft for greater exit speed.
• Integrated shaft guide along the full length of the barrel to ensure stability and accuracy when tracking.
• “Auto-R” Trigger Mechanism in AISI 316 stainless steel with integrated line release, positionable on either side of the speargun to suit the user’s preference.
• CNC-machined stainless steel Trigger for reliability and long service life.

Comfort and Ergonomics

• Dual anatomical polypropylene handle, adjustable to adapt to different hand shapes and improve underwater grip.
• Butt pad with a soft plastic support, designed to increase comfort during extended dives.
• Dedicated mount for Hercules reels or the new C4 Vertical reels, attachable via threaded holes on the barrel, optimizing line management and making retrieval easier.

Equipment and Availability

• The speargun comes complete with a Tahitian shaft and C4 Grey Bull Primeline circular bands, selected to ensure efficient propulsion and mechanical resistance.
• Reels are sold separately to allow customization according to the spearfisher’s needs.
• Available in five lengths: 65 cm, 75 cm, 85 cm, 95 cm, and 105 cm.
• Compatible with shafts from 6.0 to 6.75 mm in diameter.

Technical Advantages

The high-modulus carbon fiber monocoque structure gives the Mr. Carbon 2.0 an exceptional combination of light weight and rigidity, improving finning responsiveness and fluid movement while freediving. The band configuration parallel to the shaft significantly increases shaft exit speed, improving penetration power when spearfishing. The dual adjustable handle and customizable Trigger Mechanism optimize control of the speargun both when aiming and during release.

PROtech Fins for Freediving

The PROtech fins are designed for technical freediving, developed through a dedicated study of hydrodynamic flows and equipped with 3D geometries optimized to adapt to the body’s natural movement, ensuring efficiency and fluidity throughout the fin stroke.

Design and Comfort

The right/left anatomical foot pocket ensures a precise fit for the foot, eliminating pressure points and energy loss. The one-piece structure integrating blade and foot pocket provides immediate, direct thrust transmission, improving movement responsiveness in the water.

Technical Features and Materials

The blades are made from 100% multilayer laminated carbon, engineered for progressive energy release without vibration, ensuring a smooth, continuous, and highly technical fin stroke. The anti-turbulence convex profiles of the water rails improve hydrodynamic stability, while the side stabilizers provide controlled buoyancy, optimizing trim and stability during the dive.

Technical Specifications

• Complete fin dimensions (EU size 42/43): 890 x 190 mm
• Blade material: T700 multilayer carbon
• Blade Stiffness: Medium/Soft
• Water rails color: Black
• Water rails type: Anti-turbulence convex profile
• Available EU Sizes: 36/37 – 38/39 – 40/41 – 42/43 – 44/45
• Available US/Canada Sizes: 4.5/5 – 6/6.5 – 7.5/8 – 9/10 – 11/12

C4 S-990 Camu 100% Carbon Freediving Fins

The S-990 Camu are fins specifically designed for freediving and spearfishing, made entirely from 100% carbon and part of the new C4 200 line. The blade, measuring 770 x 192 mm, is built with a progressive lamination of four different types of Japanese carbon, combined across seven unidirectional layers. This configuration significantly improves the reactivity and mechanical strength of the blade, ensuring efficient thrust transmission during finning in the water.

Technical blade features

• Dovetail Rig for improved flow and optimized hydrodynamics.
• Visible carbon finish enhanced with a white decoration for a technical and functional design.
• Water rails glued and overmolded at high pressure and temperature, allowing the polymer to fuse with the blade composite and eliminating the risk of detachment during dives.
• Variable water rail geometry designed to protect the blade in the area near the foot and minimize load losses along the entire length of the blade.

Foot Pocket

The fins are fitted with the 200 foot pockets, featuring:

• Black thermoplastic elastomer upper to provide elasticity and comfort in the fit.
• Military green polypropylene sole, durable and lightweight to optimize fit without compromising agility and control.

Available variants

• Blade stiffness: 25 soft, 30 medium, and 40 hard, to suit different thrust and sensitivity requirements during freediving.
• Available Sizes: 36/37, 38/39, 40/41, 41/42, 42/43, 43/44, and 44/45, for a perfect fit and in-water comfort.

L-1090 Pesca Fins 100% Carbon - 200 Line C4

The L-1090 Pesca fins are made entirely from pure carbon and are part of the new C4 200 line, designed for freediving and spearfishing. The blade is built with a progressive lamination of four different types of Japanese carbon, arranged in seven unidirectional layers, for an optimal balance between reactivity and mechanical strength.

Technical Features of the Blade

• Dimensions: 940 x 192 mm
• Construction: seven layers of carbon combined to ensure maximum thrust transmission
• Finish: visible carbon with military green decoration
• Water rails: bonded and overmolded under high pressure and temperature, made with polymer fused to the blade composite to prevent detachment during dives
• Variable geometry of the water rails designed to protect the area near the foot and minimize load losses along the entire blade
• Hydrodynamic anti-turbulence flap to improve smooth movement through the water

Foot Pockets

The fins are fitted with 200 foot pockets featuring a black thermoplastic elastomer upper and a white polypropylene sole, ensuring comfort, protection, and a snug fit for effective force transmission during the fin stroke.

Available Variants

• Stiffnesses: 25 (soft), 30 (medium), 35 (medium hard)
• Sizes: 36/37, 38/39, 40/41, 41/42, 42/43, 43/44, 44/45

These fins are specifically designed for spearfishing, offering a balance of lightness, elasticity, and precision in power transmission, promoting an efficient, less tiring fin stroke during dives.

L-1090 Freediving Fins 100% Carbon - 200 Line C4

The L-1090 Freediving fins are made entirely from carbon and are part of C4’s brand-new 200 line, designed specifically for freediving and spearfishing.

Materials and Construction

The blade is made with a progressive lamination of four different types of Japanese carbon arranged across seven unidirectional layers. This layup optimizes the balance between reactivity and mechanical strength, ensuring high efficiency in power transmission.

The finish features exposed carbon with a white decoration, giving it a technical and functional look.

Blade Features

• Asymmetric water rails bonded and overmolded using high pressure and temperature, allowing the polymer to fuse perfectly with the blade composite. This technology prevents delamination and ensures long-lasting protection in the area near the foot.
• The variable geometry of the water rails is designed to minimize pressure losses along the entire length of the blade and improve fluidity in the water.
• Hydrodynamic anti-turbulence flap, designed to optimize stability and reduce vibration during finning.
• Blade dimensions: 940 x 192 mm, ideal for an optimal balance between thrust and maneuverability.

Foot Pocket

The fins are fitted with the 200 foot pocket, featuring:

• Black thermoplastic elastomer upper for superior elasticity and comfort.
• White polypropylene sole, durable and lightweight, promoting foot stability.

Available Stiffnesses and Sizes

• Blade stiffnesses: 20 super soft, 25 soft, 30 medium, to suit different finning styles and diving conditions.
• Available in 7 sizes: 36/37, 38/39, 40/41, 41/42, 42/43, 43/44, 44/45.

S-990 Firestone Fins in 100% Carbon - 200 Line C4

The S-990 Firestone are an advanced solution for freediving and spearfishing, made from 100% carbon and part of C4’s 200 line, designed to deliver an optimal combination of lightness, responsiveness, and mechanical strength.

Structure and Materials

The blade features a progressive lamination of 4 different types of Japanese carbon, arranged in 7 unidirectional layers. This technical construction allows for excellent optimization of thrust transmission and blade durability.

The blade tip is shaped with a swallowtail profile, a design that improves finning fluidity and hydrodynamics, reducing water resistance during freediving movement.

Water Rails and Protection

The water rails are integrated through bonding and high-pressure, high-temperature overmolding, a process that fuses the polymer with the blade’s carbon composite, eliminating the risk of detachment during dives.

The variable geometry of the water rails has been engineered to:

• Protect the blade in the area adjacent to the foot
• Minimize load losses along the entire length of the blade

Foot Pocket and Sizes

The fins are fitted with the 200 foot pocket, made with a black thermoplastic elastomer upper and a red polypropylene sole, designed to ensure comfort, fit, and durability in the water.

The blade dimensions are 770 x 192 mm, optimized to ensure efficiency and control during finning.

Stiffnesses and Available Sizes

The S-990 Firestone fins are available in three stiffness levels to suit different thrust and control needs in freediving:

• 25 Soft
• 30 Medium
• 40 Hard

The sizes cover a wide range:

• 36/37
• 38/39
• 40/41
• 41/42
• 42/43
• 43/44
• 44/45

SPORTECH CARBON carbon freediving Fins

The SPORTECH CARBON are fins designed specifically for dynamic freediving and deep freediving, optimally balancing performance and ergonomic comfort. These fins deliver reliable efficiency during extended sessions, ensuring effective thrust transmission and a smooth kick while freediving.

Main technical features

• Open-heel silicone Foot Pocket: anatomical and soft, it provides an excellent fit for lasting comfort and greater freedom of movement.
• Right and left anatomical design: optimizes foot fit and improves kicking fluidity.
• Monobloc carbon structure: seamless, it allows continuous and efficient power transfer, increasing blade responsiveness.

Use and performance

Compared to the PROTech model, which is more geared toward competitive use, the SPORTECH CARBON are ideal for freedivers who need a versatile product, combining a high technical level with superior comfort. Their composition and construction make them suitable for frequent use, maintaining an excellent balance between lightness and mechanical strength while freediving.

Fins MB001 CAMOSKIN OCEAN

The MB001 CAMOSKIN MED fins represent the evolution of C4’s upper-mid-range carbon fin lineup, part of the 200 series, the brand’s highest level of research and development. This model is the most advanced interpretation of the traditional carbon fin, updated with innovative materials and construction solutions optimized for freediving and spearfishing.

Materials and Construction

The 250 foot pocket, developed as a direct evolution of the previous 300 model, is made from TPE 75 ShA overmolded onto a robust rigid sole. This construction ensures efficient, direct energy transfer from the foot to the blade, significantly improving responsiveness during the fin stroke.

The precisely engineered geometry keeps thickness to a minimum, reducing overall weight: the 250 foot pocket in size 41/42 weighs only 250 grams, ensuring lightness without compromising mechanical strength.

Technical Features and Performance

• Efficiency: the combination of materials and design optimizes thrust and energy transfer for smooth movement in the water.
• Controlled elastic response: the balance between blade elasticity and stiffness allows for a precise, manageable fin stroke while reducing muscle fatigue.
• Traditional technical setup: maintains the classic feel appreciated by experienced freedivers, while still delivering the benefits of modern technology.

The MB001 CAMOSKIN OCEAN fins are designed for freediving and spearfishing users looking for a technical tool that combines comfort, lightness, and fluid movement underwater.

Fins MB001 CAMOSKIN MED

The MB project represents a renewal of the mid-to-high-end range of carbon fins, faithfully maintaining the traditional technical principles of finning technique in freediving and spearfishing. Within C4’s technical vision, the 200 series represents the highest level of research and development, while the MB001 are the best interpretation of the traditional carbon fin, updated with modern materials and construction solutions.

The MB001 CAMOSKIN MED are equipped with the new 250 foot pocket, a direct evolution of the previous 300 model. This foot pocket is made from TPE 75 ShA overmolded onto a rigid insole, a combination that ensures efficient, direct energy transfer from the foot to the fin blade. Careful attention to geometry has made it possible to reduce thickness and keep overall weight down: the 250 foot pocket in size 41/42 weighs only 250 g.

The result is a carbon fin that combines efficiency, controlled elastic response, and a traditional technical setup, designed for freedivers looking for a balance between high performance and a classic finning feel.

C4 x Marco Bonfanti MB002 Carbon Fins

The MB002 Fins are a new generation of T700 carbon fins developed by C4 in collaboration with champion Marco Bonfanti, designed specifically for freediving and spearfishing. Their key innovation lies in the Reverse Parabolic design, which moves the parabolic flex curve close to the foot rather than toward the tip.

Technical features and benefits

This structural change was made possible by in-depth research into carbon lamination, which made it possible to increase the thrust surface area compared to the hydrodynamic resistance surface. As a result, the MB002 deliver greater elastic deformation, increasing propulsion efficiency during the fin stroke.

Stiffer blades can therefore be used while maintaining the same physical effort as lighter blades, optimizing energy transfer and improving thrust without increasing fatigue.

Structure and materials

• Blade size: 874 x 195 mm, with total fin length (size 42/43) of 980 x 195 mm
• Material: high-quality T700 carbon, for an optimal balance between lightness and mechanical strength
• Convex-profile water rails along the full length of the blade: reduce lateral turbulence and improve water channeling, increasing hydrodynamic stability
• Water rail color: black; blade color: black-white with matte finishes for a clean, professional look
• Preformed 250 Foot Pocket with 3° angle to optimize force transfer and ensure comfort during the fin stroke

Available versions

• 7 available sizes: 36/37, 38/39, 40/41, 41/42, 42/43, 43/44, 44/45
• 3 blade stiffness levels to suit different thrust and fatigue requirements: 20 Super Soft, 25+ Soft, 30 Medium

The MB002 Fins are ideal for those looking for a long, precise blade with an elastic response engineered to optimize propulsion in freediving and spearfishing, combining advanced materials with an innovative design.

MB001 Carbon Fins for Freediving and Spearfishing

The MB001 fins are designed by C4 in collaboration with Marco Bonfanti, specifically developed for the needs of freedivers and spearfishers. Made from T700 carbon, they deliver an optimal combination of lightness, elasticity, and mechanical strength.

Reverse Parabolic Lamination Design and Technology

The main feature of the MB001 is the Reverse Parabolic: the parabolic flex curve is positioned close to the foot rather than at the tip, thanks to advanced lamination studies. This increases the thrust surface area in relation to hydrodynamic resistance, improving the mechanical behavior of the blade and significantly increasing propulsion.

The larger thrust surface makes it possible to use stiffer blades while maintaining the same level of effort, optimizing finning efficiency and performance in the water.

Technical Features of the Blade and Water Rails

• Blade size: 806 × 195 mm
• Fin size, size 42/43: 920 × 195 mm
• Material: T700 Carbon
• Available stiffnesses: 20 Super Soft, 25 Soft, 30 Medium
• Black water rails with a rounded profile to reduce turbulence, extending along the full length of the blade to improve water channeling and reduce edge vortices

Foot Pockets and Sizes

The MB001 fins are fitted with 250 foot pockets pre-shaped with a 3° angle, designed to ensure excellent comfort and smooth, direct power transmission.

The model is available in 7 sizes: 36/37, 38/39, 40/41, 41/42, 42/43, 43/44, 44/45, ensuring a precise and secure fit.

Applications

These carbon fins are specifically developed for freediving and spearfishing, offering a perfect balance between stiffness and elasticity for efficient thrust and greater underwater autonomy.

Dyn UP – One-Piece Wetsuit for Dynamic Freediving in the Pool

The Dyn UP one-piece wetsuit is specifically designed for dynamic freediving in the pool, developed in collaboration with champion Umberto Pelizzari. Made from Glide Skin neoprene, a material known for its high compression resistance and excellent elastic recovery, it ensures durability and comfort during extended dives.

Technical Features

• Variable neoprene thickness: 2.0 mm in critical areas such as the chest, back, and thighs for greater insulation and protection
• Reduced thickness to 0.5 mm pre-compressed on the neck, arms, hips, and legs to maximize freedom of movement and comfort
• Pre-shaped cut with fewer internal seams to maintain elasticity and comfort during finning
• Certified material free from harmful substances such as phthalates and latex, ensuring skin safety and environmental responsibility
• Sleeves with multiple bar tacks in the wrist area, designed to allow custom trimming without the risk of seams coming undone
• Available in 6 sizes: 0, 1, 2, 3, 4, and 5, for a precise, close fit

Materials and Comfort

The Glide Skin neoprene used in the Dyn UP offers a combination of lightness, elasticity, and mechanical resistance, ideal for the demands of dynamic freediving. The one-piece construction minimizes drag and improves fluidity of movement underwater, while the material composition ensures fast shape recovery and optimal compression even at depth.

Functional Details

• Ergonomic cut designed to follow the body while maintaining thermal comfort and freedom of movement
• Sleeves can be modified according to individual preferences without compromising the suit’s seal or integrity
• Reduced internal seams to limit discomfort and increase product durability

Dyn UP One-Piece Wetsuit for Dynamic Freediving in the Pool

The Dyn UP is a one-piece wetsuit designed specifically for dynamic freediving in the pool, developed in collaboration with Umberto Pelizzari. Made with glide skin neoprene, this material provides high compression resistance and excellent elastic recovery, both essential for ensuring stretch and fluid movement underwater.

Technical Features

• Differentiated thicknesses: 2.0 mm on the chest, back, and thighs for balanced protection
• 0.5 mm pre-compressed Neoprene on the neck, arms, sides, and legs to optimize freedom of movement and thermal comfort
• Pre-shaped cut with minimal internal seams, improving stretch and comfort during finning
• Sleeves with bar tacks at the wrists to allow custom trimming without the risk of seam unraveling
• Neoprene certified free from harmful substances such as phthalates and latex, ensuring user safety and environmental responsibility

Fit and Availability

The wetsuit is available in 6 sizes, from 0 to 5, to ensure a snug, comfortable fit, essential for optimizing thermal comfort and mobility in the water during dynamic freediving sessions.

Cruiser Inflatable Float Board for Freediving and Spearfishing

The Cruiser is an inflatable float board designed specifically for freediving and spearfishing, offering high resistance and rigidity despite its minimal thickness, thanks to innovative dropstitch technology. This design provides optimal buoyancy and excellent hydrodynamics, making it easier to handle in the water during underwater sessions.

Materials and Technical Features

• Made from durable PVC, with a non-slip coating on the top surface to ensure stability and safety during use
• Integrated elastic mesh for easy transport of essential accessories such as flashlights and water bottles
• Four dedicated bungees for securing spearguns and related accessories, ensuring practical and safe transport
• Nine stainless steel D-rings positioned for mounting and securing additional equipment
• High-visibility extendable flag (30 x 30 cm) with included 90 cm sectional pole, for mandatory underwater signaling and surface safety
• Maximum inflation pressure: 2.0 bar, to ensure high rigidity and stability of the float board

Dimensions and Portability

• Length: 85 cm
• Width: 60 cm
• Height: 10 cm

The float board is extremely lightweight and easy to carry thanks to the included dedicated backpack, which allows it to be stored deflated and rolled up in a compact, convenient way.

Included Equipment

• Backpack for carrying and storing the deflated float board
• Manual pump for quick inflation in just a few minutes
• Signal flag with extendable pole for safety during spearfishing and freediving

Technical Benefits

Dropstitch technology gives the Cruiser high structural rigidity and light weight, optimizing thrust transmission and handling of the float board in the water. The non-slip material and bungee layout ensure comfort and practicality when carrying the tools needed for freediving and spearfishing.

SPORTECH FBG Fins for Freediving

The SPORTECH FBG are freediving fins made from Prepreg Epoxy fiberglass, designed for modern pure freediving. The design focuses on efficiency, comfort, and control during extended sessions, both in dynamic freediving and constant weight.

Technical Features

• Blade dimensions: 750 x 194 mm
• Complete fin dimensions (size 40/42): 860 x 194 mm
• Blade Stiffness: Soft, Medium/Soft, designed for progressive, controlled thrust transmission
• Water rails: black anti-turbulence rounded profile, to improve hydrodynamics and stabilize the fin in motion
• Foot Pocket: soft SPORTECH silicone with open heel, ensuring a comfortable, progressive fit while reducing fatigue and pressure points
• Differentiated anatomical design between right and left, for an ergonomic fit and improved power transfer
• Monoblock structure with no voids, derived from the PROTech model, to maximize thrust efficiency
• Available Sizes (Europe): 35/37 – 37/39 – 39/41 – 41/43 – 43/45 – 45/47
• Available Sizes (US/Canada): 4.5–6.5 – 6.5–7.5 – 7.5–8.5 – 8.5–9.5 – 9.5–11 – 11–12.5
• Compatibility: only with SPORTECH blade models

Materials and Performance

The blade is made from fiberglass Prepreg Epoxy, a material that provides an optimal combination of light weight, mechanical strength, and reactivity. The Soft and Medium/Soft blade stiffness allows for a smooth finning action and better movement control in the water, ideal for dynamic freediving and constant weight.

Comfort and Ergonomics

The silicone foot pocket is designed to ensure a soft, progressive fit, minimizing fatigue during extended dives. The open heel promotes foot stability without limiting freedom of movement, while the differentiated anatomical design optimizes power transfer, improving overall fin control.

Applications

The SPORTECH FBG are recommended for freedivers who train regularly in dynamic or constant weight. They are designed for frequent, dedicated freediving use, delivering an excellent balance of technical quality and cost/performance ratio in the spearfishing and freediving sector.

SPORTECH FBG Fins for Freediving

The SPORTECH FBG fins are designed in fiberglass for modern pure freediving, offering an optimal balance of efficiency, comfort, and control during long training sessions in dynamic apnea and constant weight.

Technical Features

• Blade dimensions: 750x194 mm
• Full fin dimensions (size 40/42): 860x194 mm
• Blade material: Fiberglass Prepreg Epoxy
• Blade Stiffness: Soft, Medium/Soft
• Blade color: Black
• Water Rails: Black with rounded anti-turbulence profile
• Foot Pockets: SPORTECH silicone
• Available Sizes (Europe): 35/37 – 37/39 – 39/41 – 41/43 – 43/45 – 45/47
• Available Sizes (US/Canada): 4.5–6.5 – 6.5–7.5 – 7.5–8.5 – 8.5–9.5 – 9.5–11 – 11–12.5
• Compatibility: Only with SPORTECH blade models

Design and Comfort

The silicone foot pocket is designed to provide a soft, progressive fit, reducing fatigue and preventing pressure points. The open heel and right/left differentiated anatomical design ensure a better fit to the foot.

The one-piece structure with no gaps, derived from the PROTech model, allows direct and efficient power transfer, improving finning responsiveness and fluidity of movement in the water.

Applications

The SPORTECH FBG are recommended for freedivers engaged in regular dynamic apnea and constant weight training. These are freediving-specific fins, designed for frequent, uncompromising use with a competitive price-to-performance ratio.

Tavolara C4 Buoy for Freediving - Purpose-Built Tool for Line Training

Tavolara C4 is a buoy designed specifically for freediving training on the line and for pre-dive phases, ideal for ensuring safety and practicality during sessions at sea.

Technical Features

• Double-chamber construction for greater reliability and safety in the event of damage to the primary chamber
• 850gsm PVC construction with a thickness of 0.7 mm, ensuring strength and mechanical resistance
• Buoy diameter: 80 centimeters
• Height: 18 centimeters
• Two-tone color: White and Black, optimal for visibility in the water

Functionality and Construction Details

• Line and accessory storage compartment accessible via a high-strength YKK zipper, designed for easy use and long service life
• Equipped with a Bravo valve supporting a maximum pressure of 8 psi, for proper inflation management
• Four ergonomic side handles for a secure grip and to allow simultaneous use by multiple freedivers
• Equipped with a compliant diver-down flag to indicate underwater presence at the surface
• Integrated stainless steel D-rings for routing and securing the line, ensuring reliability and resistance to marine corrosion

Recommended Use

The Tavolara C4 buoy is designed to support freedivers during line training, allowing easy line management and a high level of safety in the water thanks to its double chamber and robust construction. Also suitable for preparation phases before the dive and for signaling presence at the surface during spearfishing and freediving activities.

Aurea Man One-Piece Wetsuit in Neoprene Glide Skin 2mm

Aurea Man is a one-piece wetsuit made from 2 mm neoprene glide skin, a material selected for its high compression resistance and fast elastic recovery. This type of neoprene ensures a close, comfortable fit during freediving and spearfishing.

The wetsuit design features a pre-shaped cut with few seams on the inside to maintain excellent elasticity and a high level of comfort during dives. Fewer seams help improve freedom of movement and minimize pressure points on the skin.

Technical features

• Thickness: 2.0 mm, ideal for dives in moderate waters and conditions requiring good mobility
• Material: certified Neoprene Glide Skin, phthalate- and latex-free, ensuring safety for health and the environment
• Pre-shaped cut for an ergonomic fit to the freediver’s body
• Reduced seams on the inside to maintain elasticity and comfort
• Adjustable sleeves: bar tacks in the wrist area allow custom trimming to adjust the length without risk of seam unraveling
• Available sizes: 1, 2, 3, 4 and 5 for a precise fit

Benefits for freediving and spearfishing

The Aurea Man wetsuit provides a balance of lightness and thermal protection, supporting a smooth finning action and optimal control of underwater movements. The ability to adjust sleeve length increases versatility for different body shapes and operational preferences. The quality of the Glide Skin neoprene also ensures excellent durability and comfort even after many dives.

C4 Sideral Lady One-Piece Wetsuit in Neoprene Glide Skin

The Sideral Lady is a one-piece wetsuit specifically designed for freediving and spearfishing, made from high-mechanical-strength neoprene glide skin with excellent elastic recovery. This material ensures reduced compression during dives, preserving elasticity and thermal comfort.

Technical Features

• Material: certified neoprene rubber, phthalate-free and latex-free, ensuring user safety and environmental responsibility.
• Thickness: 2.0 mm, balanced to provide freedom of movement and thermal protection during freediving.
• Pre-shaped cut: optimizes fit by reducing resistance during finning and improving freedom of movement.
• Reduced number of seams: minimizes compression areas and increases durability while maintaining the garment’s elasticity.
• Sleeves with adjustable bar tacks: allow the length to be adapted to personal dimensions with simple cuts, preventing seam unraveling and loss of structural integrity.
• Available Sizes: 0, 1, 2, 3, 4 and 5, to ensure a precise fit for different body shapes.

Benefits for Freediving and Spearfishing

The Sideral Lady wetsuit is designed to deliver excellent thermal comfort and proper elasticity, essential for freediving and spearfishing. The low-seam construction limits friction points and improves fluidity of movement in the water.

The adjustable bar tacks on the sleeves allow easy customization without compromising the seal or durability of the wetsuit, a very useful feature for optimizing fit during freediving and spearfishing activities.

D&D Neck Weight - Deep & Dynamic for Freediving and Spearfishing

The D&D Neck Weight represents the evolution of the C4 Dyno neck weight, designed specifically for freediving in both depth and dynamic disciplines. The name Deep & Dynamic reflects the product’s technical versatility, allowing the weight to be adjusted from 1 kg up to 4 kg in a single system adaptable to different diving needs.

Technical Features

• Made from lead coated with a layer of thermoplastic rubber to ensure mechanical strength and long-lasting durability.
• Highly hydrodynamic shape designed to reduce drag and minimize load on the neck, improving the fluidity of the fin kick and freedom of movement while freediving.
• Semi-mobile segments that follow the anatomy of the thoracic vertebrae, allowing a more natural, unrestricted trim while swimming.
• Modular system consisting of a main neck weight to which segments can be added or removed at the rear to vary weight and trim.
• Equipped with numbered plastic segments to make assembly easier and allow precise load adjustment.
• Integrated safety clips to prevent accidental loss of the segments during the dive.

Weight Configurations

The D&D Neck Weight is available in three configurations designed for different types of diving:

• 1.6 kg - ideal for deep dives, providing efficient balance while reducing bulk.
• 3 kg - neck weight equipped with 4 rear segments for an intermediate trim adaptable to more agile dynamics.
• 4 kg - full configuration with 5 rear segments for dynamic dives that require greater ballast load.

Benefits for Freedivers and Spearfishers

Thanks to its adjustable weight and distinctive ergonomic shape, the D&D Neck Weight significantly improves trim control during freediving and spearfishing. The weight load is optimized close to the center of buoyancy, ensuring better balance and greater movement efficiency.

The system’s adaptability with semi-mobile segments and the lightweight coating material contribute to excellent comfort during extended use and complete joint freedom.

D&D Modular Weight Neck Collar - Deep & Dynamic for freediving and spearfishing

The D&D Neck Collar by C4 represents an important evolution of the traditional Dyno neck collar, designed specifically for those practicing deep freediving and dynamic apnea. Its main feature is its adjustable weight, which can range from 1 kg up to 4 kg depending on the needs of the dive, providing a single product adaptable to different buoyancy setups.

Technical features and materials

Made from lead coated with thermoplastic rubber, the neck collar features a hydrodynamic shape designed to optimize finning fluidity and reduce load on the neck, improving comfort and freedom of movement during freediving.

The weight is positioned close to the body’s center of gravity, aligning with buoyancy forces to make balancing in the water easier. In addition, the semi-mobile rear segments are designed to follow the natural movement of the thoracic vertebrae without limiting the swimmer’s mobility.

Modularity and configurations

The system consists of a modular base neck collar to which removable, numbered rear segments made of plastic attach, allowing the weight to be adjusted quickly and safely, also thanks to safety clips that prevent accidental loss.

The available configurations are:

• 1.6 kg Neck Collar - ideal for deep dives, with reduced weight for greater agility
• 3 kg Neck Collar - version with 4 rear segments for a balanced and versatile buoyancy setup
• 4 kg Neck Collar - with 5 rear segments for dynamic apnea and increased ballast

Benefits during underwater use

• Precise weight adjustment to easily adapt to the type of freedive
• Reduced cervical stress thanks to the ergonomic shape and soft coating
• Maximum freedom of movement ensured by the semi-mobile segments that move with the spine
• Simple and secure assembly with numbered segments and anti-loss clips

The D&D Neck Collar is a targeted technical solution for freedivers and spearfishers who need a customizable weight system that improves efficiency, comfort, and buoyancy control in the water.

Sideral Man C4 One-Piece Wetsuit in Neoprene Glide Skin

The Sideral Man is a one-piece wetsuit made from neoprene glide skin, a material known for its high compression resistance and excellent elastic recovery. These properties ensure a perfect fit and good thermal insulation during freediving and spearfishing.

Design and Comfort

The wetsuit features a pre-shaped cut with a reduced number of internal seams, helping maintain elasticity and ensuring excellent comfort during underwater movement. The cut is designed to promote freedom of movement during finning and spearfishing operations.

Technical Details

• Thickness: 2.0 mm, balanced to provide flexibility and thermal protection during medium-depth dives.
• The sleeves feature multiple bar tacks at the wrists, allowing the diver to make custom cuts without the risk of seam failure or material deterioration.
• Available in 6 sizes (0, 1, 2, 3, 4 and 5), to suit different body shapes while ensuring a close, functional fit.

Materials and Certifications

The neoprene used is certified completely free from harmful substances such as phthalates and latex, ensuring safety for both the user and the marine environment. The neoprene rubber also provides superior mechanical resistance, essential for freediving and spearfishing activities.

Single Blade S-990 CAMU

The single blade S-990 CAMU is designed for spearfishing and freediving, with a strong focus on responsiveness and smoothness during the fin stroke. This model is available in the Soft - 25 stiffness version, ideal for those looking for a balance between elasticity and power transfer in the water.

The blade is made with selected materials to ensure good hydrodynamic efficiency and a low weight, making it easy to handle and suitable for extended use during freediving sessions.

Single Blade L-1090 for Freediving

The single blade L-1090 is designed specifically for spearfishing and freediving, available in three different stiffness options to match the thrust and response needs of each freediver.

Materials and construction: Made with selected materials to ensure lightness and mechanical strength, the blade provides effective power transfer and good responsiveness during finning. The choice of stiffness allows you to fine-tune the balance between flexibility and power, optimizing efficiency in the water.

Comfort and hydrodynamics: The blade design is engineered to reduce water resistance while maintaining smooth, fluid movement, supporting balanced trim and improved ergonomics during freediving dives.

• Available in 3 stiffness options to customize responsiveness
• Lightweight materials with high mechanical strength
• Hydrodynamic design for efficient power transfer
• Suitable for spearfishing and freediving

Single Blade L-1090 for Spearfishing

The single blade L-1090 is specifically designed for spearfishing, available in three different stiffness levels to suit different finning and resistance needs in the water.

The choice of stiffness allows you to optimize the efficiency and blade responsiveness, ensuring an ideal balance between power and comfort in thrust transmission during underwater movement.

This blade is made with selected materials to provide a combination of mechanical strength and lightweight performance, promoting a smooth, controlled fin stroke without causing excessive fatigue for the freediver.

D&D - Deep & Dynamic Weight Neck Weight for Freediving and Spearfishing

The D&D Neck Weight represents the technical evolution of the well-known Dyno neck weight produced by C4, designed specifically for deep and dynamic freediving. Its design allows the weight to be adjusted from 1 kg to 4 kg by adding or removing segments, providing the versatility needed for different types of dives.

Made of Lead Weight coated with a layer of thermoplastic rubber, the neck weight features a highly hydrodynamic shape that reduces load on the neck, allowing for a smoother, less tiring fin kick. Positioning the weight close to the hydrostatic balance point optimizes in-water trim, improving vertical stability and reducing mechanical resistance during movement.

The system consists of a modular neck weight with semi-mobile rear segments that follow the anatomy and movements of the thoracic spine, ensuring complete freedom of movement and minimizing any joint restriction during freediving sessions.

Technical Features

• Material: Lead Weight coated in thermoplastic rubber
• Hydrodynamic design for greater fluidity in the water
• Modular system with numbered plastic segments for fine-tuning the weight
• Semi-mobile rear segments to adapt to the movements of the thoracic vertebrae
• Safety clip to prevent accidental loss of the neck weight
• Adjustable weight from 1 kg (minimum configuration) up to 4 kg (maximum configuration)
• Base product dimensions and weight: 3.0 kg, white color

Available Configurations

• 1.6 kg neck weight – ideal for deep dives
• 3 kg neck weight – structure with 4 rear segments
• 4 kg neck weight – structure with 5 rear segments

The D&D - Deep & Dynamic Neck Weight is designed to meet the specific needs of spearfishing and freediving in both static and dynamic setups, optimizing the diver’s body balance and ensuring comfort and practicality even during extended dives.

D&D - Deep & Dynamic Neck Weight for Freediving and Spearfishing

The D&D neck weight represents the evolution of the Dyno neck weight from C4, specifically designed for deep freediving and dynamic apnea. The name Deep & Dynamic highlights its versatility: it allows the weight to be adjusted from 1 kg up to 4 kg in a single modular system optimized for spearfishing and deep freediving.

Technical Features

• Adjustable weight from 1 kg to 4 kg with removable, adjustable segments
• Material: lead coated in durable, hydrodynamic thermoplastic rubber
• Shape designed to minimize load on the neck and improve finning
• Semi-mobile rear segments follow the movement of the thoracic vertebrae, ensuring full joint freedom
• Equipped with a safety clip to prevent accidental loss during dives
• Color: black

Functionality and Benefits

The weight distribution is optimized to work close to the body’s center of gravity, balancing buoyancy forces and improving freediving efficiency. Thanks to the semi-mobile segments, the neck weight does not restrict the swimmer’s movements, maintaining fluidity and comfort during descent and ascent.

Available Configurations

• 1.6 kg: base configuration ideal for deep dives that require a light, balanced trim
• 3 kg: neck weight with four rear segments for medium buoyancy compensation in dynamic apnea
• 4 kg: neck weight with five rear segments for more demanding dynamic apnea sessions, with a higher ballast load

Included Equipment

• Numbered plastic segments to make assembly and weight adjustment easier
• Safety clip for fastening and prevention of accidental loss

The D&D neck weight provides a modular, functional system for quickly adjusting ballast balance in freediving, combining hydrodynamics, comfort, and freedom of movement, key aspects for spearfishing and freediving.

C4 Torpedo Buoy for Spearfishing

The C4 Torpedo buoy is designed specifically for spearfishing in bluewater, made from durable 0.7 mm high-visibility PVC. This material ensures excellent mechanical resistance and long service life even in the marine environment. Its high visibility makes the buoy easy to spot in open water, improving safety during underwater activity.

Technical Features

• 0.7 mm PVC construction, strong and durable
• Oversized valve for inflation up to 2 bar, allowing fast and secure air filling
• Two side handles and one rear handle for easy handling and transport
• Two D-rings and stainless steel swivel snap hook, for securing gear or ballast
• Supplied with inflation adapter and standard bicycle pump, for practical use even in the field
• Available in three capacities: 15L, 30L and 45L, adapting to different spearfishing needs

Benefits for Freediving and Spearfishing

The rugged construction and oversized valve improve inflation efficiency, reducing preparation time on the surface. The ergonomic handles allow good control of the buoy while swimming or retrieving it, while the stainless steel D-rings provide reliable anchor points resistant to marine corrosion.

The choice of three sizes lets you select the most suitable volume based on dive depth and the type of gear carried, ensuring the right balance between buoyancy and bulk.

Single Blade S-990 FIRESTONE for spearfishing and freediving

The single Blade S-990 FIRESTONE is specifically designed for freediving and spearfishing, available in three stiffness levels to offer customized solutions based on thrust and comfort needs during finning.

Made with selected materials, this blade combines light weight and mechanical strength, ensuring optimal thrust transmission and efficient hydrodynamic performance in the water.

The choice between different stiffness levels allows you to achieve the ideal balance between flexibility and efficiency, improving fluidity of movement and reducing fatigue during freedives. The blade’s advanced design ensures powerful thrust and immediate responsiveness, key elements for precise, controlled maneuvering in spearfishing.

C4 FGB Umberto Pelizzari Fiberglass Fins

The FGB Umberto Pelizzari fins are made entirely in Italy by C4 using blades made from 100% prepreg epoxy fiberglass. This specific composition and manufacturing process provides a blade with an optimal combination of elasticity and mechanical strength, delivering efficient thrust and smooth power transfer during the fin stroke. The blade design, 79 cm long and 19.5 cm wide, is engineered to maximize thrust surface while keeping hydrodynamic drag low.

Technical Features

• Blade material: 100% prepreg epoxy fiberglass
• Blade dimensions: 790 x 195 mm
• Available Blade Stiffness: 20 Super Soft, 25 Soft, 30 Medium
• Water rails: black anti-turbulence rounded profile, extending along the full length of the blade
• Foot Pocket: model 250 pre-shaped at 3°, black
• Blade color: black
• Available Sizes: 36/37 - 38/39 - 39/40 - 40/41 - 41/42 - 42/43 - 43/44 - 44/45 - 46/47

Efficiency and Comfort for Freediving and Spearfishing

The FGB-UP fin blades are designed to produce greater elastic deformation than traditional blades, increasing propulsion without placing excessive effort on the freediver or spearfisher. The rounded-section water rails help channel water along the blade, reducing vortex formation along the outer edges and improving stability and hydrodynamic efficiency during thrust.

The 250 foot pockets with a 3° angle ensure an excellent fit, providing comfort and precise transfer of foot power to the blade while limiting energy loss during the fin stroke.

C4 FGB Umberto Pelizzari Fiberglass Fins for Freediving and Spearfishing

The FGB Umberto Pelizzari fins, designed and manufactured entirely in Italy by C4, feature a blade made from 100% prepreg epoxy fiberglass. This technical material delivers the perfect balance between elasticity and mechanical strength, ensuring efficient thrust transfer and a smooth, controlled kick—essential characteristics for freediving and spearfishing.

With a length of 79 cm, the blade has a thrust area greater than its hydrodynamic resistance area, promoting optimized elastic deformation that increases propulsion without increasing physical effort. The water rails with a convex section, extending along the full length of the blade, are designed to improve water channeling, reducing lateral vortices and optimizing the fin’s hydrodynamics during dives.

The perforated 250 model Foot Pocket with a 3° angle provides a comfortable and precise fit, essential for maintaining control during freediving and spearfishing sessions, ensuring stability and comfort even during extended use.

Technical Features

• Blade material: 100% prepreg epoxy fiberglass, for an optimal balance between lightness and durability
• Blade dimensions: 790 x 195 mm
• Available stiffnesses: 20 Super Soft, 25 Soft, 30 Medium, to suit different thrust and effort requirements
• Water rails: anti-turbulence convex profile, reducing lateral vortices and improving hydrodynamic efficiency
• Foot Pocket: perforated 250 model with a 3° angle, designed for maximum comfort and a secure fit on the foot
• Color: all black for blade and water rails, for a clean, functional design in the water
• Available Sizes: from 36/37 to 46/47, for a precise and comfortable fit

Two-Piece Freediving Wetsuit Aurea Man by C4

Aurea Man is a two-piece wetsuit designed specifically for pure freediving, featuring high compression resistance and excellent elastic recovery. Ideal for those seeking comfort and functionality in spearfishing and freediving.

Materials and Construction

The outer coating combines glide skin neoprene and open-cell neoprene with a carbon-fiber-inspired pattern, providing improved hydrodynamics and protection. The internal ultraspan neoprene lining is glued and stitched on the inside, ensuring consistent elasticity and long-lasting durability.

Comfort and Thermal Protection

To increase thermal protection and make donning easier, the wrists, waist, and ankles are reinforced with dedicated edging. This solution helps maintain a snug fit and reduce heat loss while underwater.

Functionality and Design

The jacket incorporates the Easy Lock fastening system positioned in the beavertail area, allowing the jacket to be fastened and released with extreme ease, improving the interaction between the two pieces of the wetsuit.

Variants and Specifications

• Available thicknesses: 3.0 mm and 5.0 mm
• Sizes: 1, 2, 3, 4, and 5 to accommodate different body types
• Available in full versions (jacket + pants), jacket only, or pants only
• Dedicated versions for men (Man) and women (Lady)

The Aurea wetsuit offers a balanced combination of elasticity, thermal comfort, and mechanical resistance, designed for specific use in freediving and spearfishing.