C4 Antifog Extreme: Anti-Fog Solution for Masks and Goggles

C4 Antifog Extreme is an innovative anti-fog solution developed through the collaboration between C4 Carbon and Real Chimica, manufacturer of Chanteclair. Specifically designed to effectively eliminate fogging, it is ideal for freediving, snorkeling, and spearfishing masks, as well as swim goggles.

Technical Features

Thanks to its extremely powerful anti-fog performance, Antifog Extreme is compatible with both masks equipped with glass lenses and goggles with polycarbonate lenses, ensuring consistently clear, clean vision while in the water.

Fogging is caused by the silicone oils used during the high-temperature molding of silicone, which migrate from the skirt toward the lenses, forming a thin invisible film responsible for condensation.

Complete Anti-Fog System

To effectively address this issue, C4 has developed a system consisting of two complementary products:

• Absolute Cleaner: a dedicated cleaner that permanently removes silicone oils from the lenses.
• Antifog Extreme: an anti-fog solution that prevents condensation immediately before use.

This combination ensures maximum visibility and reliability for all freediving and spearfishing enthusiasts.

Certifications and Benefits

Antifog Extreme is the first patented and certified anti-fog solution developed with a specific focus on the professional elimination of fogging in underwater activities.

Instructions for Use

1. After treating the lenses with Absolute Cleaner, spray Antifog Extreme onto the inside of the lenses before wetting them.
2. Let it work for 2 minutes.
3. Rinse the mask or swim goggles.

Note: we recommend using the product immediately before use to ensure maximum anti-fog effectiveness.

C4 Floating Line Winder for Freediving and Spearfishing

The C4 floating line winder is designed to provide practicality, organization, and maximum line management during freediving and spearfishing activities. Its structure ensures efficient line organization, essential for safe, smooth operation underwater.

Technical Features

• High capacity: allows you to quickly wind large amounts of line, keeping your gear organized and ready to use.
• Line-retaining eyelets: allow the line to be securely locked in place to prevent tangles and line loss during transport or use.
• Dual side handle: makes line rewinding easier, providing a comfortable grip and faster handling, essential during spearfishing sessions.
• Floating structure: improves practicality in the water, reducing the risk of accidental loss during dives.

Thanks to these features, the C4 line winder is an essential technical accessory for freedivers and spearfishers who need organized and efficient line management, ensuring smoothness and safety during underwater operations.

C4 Open Sea 15 – Buoy for Freediving and Spearfishing

The C4 Open Sea 15 is a buoy designed specifically for freediving and spearfishing, delivering maximum practicality, light weight, and durability in marine environments. Made from high-strength PVC and built with dropstitch technology, it offers high structural rigidity while maintaining a compact, highly hydrodynamic profile.

Its essential, lightweight construction ensures excellent glide through the water, significantly reducing drag during towing. The buoy can be inflated up to 1 bar of pressure, ensuring stability and robustness even in demanding sea conditions.

Technical and functional features

• Equipped with 8 stainless steel D-rings, 6 of which are positioned on the underside, ideal for routing the line and securely attaching accessories and specific freediving and spearfishing gear
• Complete with high-visibility flag (30 x 30 cm) for effective signaling in the water
• Includes a breakdown pole measuring 90 cm, useful for positioning the flag
• Supplied with a compact and practical carry bag, making transport and storage easier

Dimensions and technical specifications

• Buoy dimensions: 90 x 28 x 15 cm
• Material: high-strength PVC
• Construction technology: dropstitch
• Maximum inflation pressure: 1 bar
• High-visibility flag: 30 x 30 cm
• Pole length: 90 cm
• 8 stainless steel D-rings

Thanks to its compact dimensions and durable construction, the Open Sea 15 is a functional, easy-to-carry solution for freedivers and spearfishers who need a reliable, safe buoy during sessions at sea.

SPHERA signaling Buoy for spearfishing

The SPHERA buoy is designed specifically for spearfishing, with a dual-chamber construction that provides greater reliability and safety during underwater activity. The inner chamber, made from PVC, ensures excellent air retention, while the outer protective cover in Nylon 300D effectively resists abrasion and wear caused by the marine environment.

Technical features

• Dual-chamber construction for greater reliability
• Inner chamber made from PVC for secure air retention
• Outer cover in Nylon 300D with high abrasion resistance

Equipment and accessories

The SPHERA buoy is equipped with 4 D-rings and 2 nylon snap clips positioned on the underside, ideal for attaching the gear needed during spearfishing. It comes complete with a regulation-compliant diver-down flag and a floating line with dual nylon snap clips, allowing immediate and practical use in the field.

Dimensions

• Diameter: 30 cm
• Height: 10 cm

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.

TORPEDO spearfishing marker Buoy

The TORPEDO buoy is specifically designed for spearfishing, with a dual-chamber construction that ensures greater safety and reliability during underwater use.

The inner chamber is made of PVC, a durable and waterproof material, while the protective outer chamber is made of Nylon 300D, known for its excellent resistance to abrasion and wear, ensuring long-lasting durability and protection against contact with the seabed and underwater objects.

Technical features

• Equipped with 6 nylon D-rings positioned on the underside, ideal for securely attaching spearfishing gear
• 1 upper D-ring dedicated to line management, making it easier to maneuver and control the buoy in the water
• Complete with a double dive flag, increasing surface visibility and safety during dives
• Supplied with a floating line, ensuring proper tension and light handling during spearfishing

Use and benefits

The TORPEDO buoy is designed for technical, continuous use in spearfishing, providing a reliable aid for marking the diver’s underwater position. The combination of high-performance materials and multiple attachment points makes this buoy versatile and functional on every freediving session.

C4 Meltemi Snorkel for Freediving and Spearfishing

Meltemi by C4 is a standard-size snorkel specifically designed to optimize airflow during freediving and spearfishing.

The tube is made from buoyant thermoplastic materials, combining two different hardness levels to provide the ideal balance between rigidity and flexibility. The slightly flattened central section is made from semi-rigid thermoplastic material to maintain its shape and improve airflow, while the upper section uses a soft material that enhances ergonomics and ease of handling in the water.

The mouthpiece features an anatomical bite made from high-quality hypoallergenic silicone, selected to provide comfort and durability during extended use. All materials used are soft, buoyant, and offer excellent elastic recovery, ensuring flexibility and durability without compromising practicality during dives.

Technical Features

• Tube made from dual-hardness thermoplastic materials to optimize comfort and functionality
• Anatomical bite in hypoallergenic silicone for excellent comfort and durability
• Soft, buoyant materials with high elasticity and resistance
• Ergonomic design to improve underwater breathing and reduce bulk

Color Variants

• Black
• Carbon Look
• Camo Med
• Camo Ocean

C4 Meltemi Snorkel for Freediving and Spearfishing

The C4 Meltemi snorkel is designed specifically for freedivers and spearfishers, with standard dimensions and optimized shapes to promote optimal airflow during dives.

The tube is made from buoyant thermoplastic materials, combining two different hardness levels to ensure maximum adaptability and comfort. The central section is semi-rigid and slightly flattened to improve hydrodynamics, while the upper section is made from soft material for greater flexibility.

The anatomical Snorkel is molded from hypoallergenic silicone, ensuring comfort and durability even during extended use. All materials used are soft, buoyant, and feature high elastic recovery, optimizing fit and practicality in the water.

Main Technical Features

• Dual-hardness tube: semi-rigid central section and soft upper section
• Buoyant thermoplastic materials for better handling in the water
• Hypoallergenic silicone Snorkel with ergonomic bite
• High elastic recovery to maintain shape and comfort
• Available in four colors: Black, Carbon Look, Camo Med, Camo Ocean

Applications

Meltemi is ideal for Freediving and spearfishing, offering excellent ergonomics and breathing comfort, essential for reducing fatigue and improving the freediving descent phase.

C4 Meltemi Snorkel for Freediving and Spearfishing

Meltemi by C4 is a snorkel designed specifically for freediving and spearfishing, with standard dimensions and optimized shapes to improve airflow while breathing in the water.

Materials and Structure

The snorkel tube is made from floating thermoplastic materials, combining two distinct hardness levels to provide the ideal balance between rigidity and flexibility. The central section of the tube, slightly flattened to optimize hydrodynamics, is made from a semi-rigid material, while the upper section is made from a softer material that enhances practicality and comfort of use in the water.

The mouthpiece is molded from hypoallergenic silicone, ensuring comfort and durability even during extended use. All the materials used are soft, floating, and feature high elastic recovery, ensuring durability and shape retention over time.

Technical Features

• Ergonomic mouthpiece design for optimal anatomical fit
• Central semi-rigid tube to preserve shape and improve breathing flow
• Floating thermoplastic materials to prevent water intrusion and make surface handling easier
• High elasticity and comfort provided by the hypoallergenic silicone mouthpiece

Color Variants

Available in four finishes:

• Black
• Carbon Look
• Camo Med
• Camo Ocean

C4 Meltemi Snorkel for Freediving and Spearfishing

The Meltemi by C4 is a standard-size snorkel designed specifically for the needs of freediving and spearfishing. Its shape is engineered to optimize airflow, ensuring efficient breathing during underwater activity.

Materials and Construction

The tube is made from floating thermoplastic materials and features two different hardness levels to easily adapt to the comfort and ergonomics required by spearfishers. The central section, slightly flattened, is made from semi-rigid thermoplastic material, while the upper section is made from a soft material that improves flexibility and comfort in the water.

The mouthpiece is molded in hypoallergenic silicone, ensuring excellent seal and comfort even during extended use.

All materials used are soft, floating, and feature high elastic recovery, ensuring durability and ease of use without compromising the snorkel’s overall lightness.

Available Colors

• Black
• Carbon Look
• Camo Med
• Camo Ocean

C4 Mistral Snorkel for Freediving and Spearfishing

The Mistral snorkel by C4 is designed specifically for the needs of freedivers and spearfishers, combining ergonomics and functional materials to ensure comfort and practicality in the water.

Technical Features

• Anatomical mouthpiece in hypoallergenic silicone: designed to provide comfort during extended sessions, helping prevent discomfort or irritation.
• Dual-durometer bi-material tube:
  • Central section in semi-rigid thermoplastic material to maintain shape and make breathing easier.
  • Upper section in soft material to improve flexibility and hydrodynamics.
• Available in 7 colors: Black, White, Camo Green, Gold, Ocean, Red, and Pirate, offering a choice that combines functionality with personal preference.

Benefits for Freedivers and Spearfishers

The Mistral snorkel’s construction ensures easy breathing and a high level of comfort, thanks to the anatomical mouthpiece and selected materials. The tube’s differentiated durometer improves fit and ergonomics, reducing bulk and optimizing its position in the water during dives.

C4 Mistral Soft Snorkel for Freediving and Spearfishing

The Mistral Soft snorkel by C4 is designed specifically for the needs of freedivers and spearfishers, ensuring optimal comfort and functionality while breathing at the surface.

Technical Features

• Ergonomic hypoallergenic silicone mouthpiece for long-lasting comfort and a better seal in the mouth.
• Tube made from dual materials with different hardness levels: the central section in soft thermoplastic material for flexibility and durability, and the upper section in ultra-soft material for adaptability and hydrodynamics.
• Total length of 37 cm, designed for ergonomics suited to freediving.
• Variable diameter from 18.5 mm to 21.7 mm for balanced, unobstructed airflow.
• Available in Black and Silver colors to suit different aesthetic preferences with no technical compromise.

Benefits for Freediving and Spearfishing

The combination of differentiated materials ensures greater elasticity and lightness of the tube, minimizing hydrodynamic drag in the water and improving breathing during the surface phase.

The hypoallergenic silicone mouthpiece provides better stability in the mouth, reducing jaw fatigue and increasing comfort during extended freediving or spearfishing sessions.

Careful construction and selected materials make this snorkel reliable and durable, meeting the specific technical needs of freedivers and spearfishers.

C4 Scirocco Snorkel for Freediving and Spearfishing

Scirocco is a snorkel designed specifically for freediving and deep spearfishing, also ideal for pool training thanks to its shorter tube compared to the Meltemi model.

Technical Features

• Reduced-size tube to minimize vibration and stale-air buildup, improving breathing during spearfishing.
• Made from floating thermoplastic materials with two different hardness levels: the central section is made from slightly flattened semi-rigid material, while the upper section is made from soft material to optimize comfort and ergonomics.
• Anatomical mouthpiece molded in hypoallergenic silicone, ensuring comfort and durability even during extended use.
• All materials used are soft, floating, and feature extremely high elastic recovery, ensuring flexibility and adaptability to the shape of the mouth.
• Available in two technical color options: Black and Carbon Look.

Benefits for Freedivers and Spearfishers

The compact structure and advanced materials ensure smoother breathing and greater comfort during dives. The combination of different hardness levels in the tube improves the snorkel’s comfort and stability, reducing fatigue and making breath management easier underwater.

Adaptability and Practicality

The ergonomic design and hypoallergenic silicone mouthpiece allow continuous use without irritation, making Scirocco a reliable snorkel for extended freediving sessions or deep-water spearfishing activities.

Mesh Bag Small C4: mesh bag for freediving and spearfishing gear

The Mesh Bag Small by C4 is a mesh bag designed for effective, organized transport of freediving, spearfishing, and snorkeling gear. It is ideal for carrying fins, masks, snorkels, and other accessories, offering practicality and durability.

Technical Features

• Made from durable perforated fabric, it promotes quick drying and water circulation inside the bag.
• Reinforced tear-resistant bottom for greater durability even under load.
• Compact dimensions for the Small version: 85 x 10 x 35 cm, allowing compact, organized gear transport.

Use and Practicality

The Mesh Bag is ergonomic and easy to carry both out of the water and during freediving or spearfishing sessions, thanks to its lightweight construction and breathable structure. The mesh makes it easier to rinse wet gear, preventing water buildup and promoting drying during transport.

Variants

• Small: 85 x 10 x 35 cm, ideal for more compact gear.
• Big: 100 x 10 x 35 cm, for those who need more space and carrying capacity.

Extreme Bag 90L by C4 - Waterproof Gear Bag for Freediving and Spearfishing Equipment

Extreme Bag 90L by C4 is a spacious and durable Gear Bag, specifically designed for transporting freediving, spearfishing, and underwater activity equipment.

Materials and Durability

Made from heat-welded Tarpaulin, a waterproof and tear-resistant material, it ensures optimal protection for your gear even in wet environments or when exposed to salt water.

Design and Functionality

• Spacious Gear Bag with a 90-liter capacity, ideal for carrying wetsuits, fins, masks, and other underwater accessories.
• Dual safety closure: a double-slider zipper combined with elastic hooks to ensure an efficient seal.
• External document pocket for securely storing cards and certificates.
• Side zippered pocket containing a changing mat, improving convenience during gear-up.
• Drain valve for quick and easy drainage of excess water, making it easier to rinse your equipment directly inside the bag.

Portability and Comfort

The bag features two side handles and an adjustable central handle that improves carrying comfort, allowing easy transport even when fully loaded.

Available Versions

Extreme Bag is available in 90-liter and 120-liter versions, adapting to different capacity needs for freediving, spearfishing, and other underwater disciplines enthusiasts.

C4 Bucket: Multipurpose Bag with Watertight Internal Lining

The C4 Bucket Bag is designed with a large internal volume and waterproof lining, ideal for use in freediving and spearfishing contexts. The internal watertight seal allows you to carry wet gear while keeping the contents protected and the surrounding material dry.

Thanks to its versatility, this bucket bag is suitable for holding:

• submerged or wet gear after sessions;
• water and soap solutions for wetsuit maintenance and donning;
• spearfishing accessories and components of various sizes.

The compact, lightweight design makes the Bucket easy to carry without bulk, ensuring practicality both on land and near the water. The watertight lining is a key feature for storing gear, preventing leaks and seepage.

Technical Features

• Capacity: roomy enough to hold different types of accessories and tools;
• Internal lining: waterproof material to maintain a watertight seal;
• Design: bucket-style structure that makes loading and unloading gear easier;
• Practicality: lightweight and compact, ideal for transport during freediving and spearfishing sessions.

C4 Single Speargun Bag for Spearfishing

The Single Speargun Bag by C4 is made from Nonwoven material, offering high tear resistance and water resistance, ensuring optimal protection when transporting your speargun in the marine environment.

Specifically designed to carry a single spearfishing speargun, it provides practicality and functionality thanks to the side zipper with single slider, making it easy to quickly insert and remove your gear.

The bag features an adjustable strap for shoulder carry, providing greater comfort when moving to the dive site or fishing spot.

Technical Specifications

• Material: Waterproof, tear-resistant Nonwoven
• Capacity: one single speargun
• Zipper: side, single slider
• Strap: adjustable for shoulder carry
• Available in two sizes: 150 cm and 170 cm length

Model 150 Dimensions

• Length: 150 centimeters
• Width: 15 centimeters

Single Speargun Bag C4 for Spearfishing

The Single Speargun Bag C4 is specifically designed for the safe, practical transport of a single speargun. Made from Nonwoven material, it provides water and tear resistance, ensuring optimal protection when moving around in marine environments.

The design features a side zipper with single slider, making it easy to insert and remove the speargun and improving efficiency during in-water operations. The bag also includes an adjustable strap for shoulder carry, offering comfort and practicality while on the move.

Technical Features

• Material: Waterproof, tear-resistant Nonwoven
• Capacity: Single speargun
• Closure: Side zipper with single slider
• Shoulder strap: Adjustable strap for shoulder carry
• Availability: Two lengths - 150 cm and 170 cm

Model 170 dimensions

• Length: 170 cm
• Width: 21 cm

C4 Speargun Bag in PVC Tarpaulin

The C4 speargun bag is made from PVC tarpaulin, a waterproof, tear-resistant material ideal for transporting freediving and spearfishing spearguns.

Design and Construction

The bag features a cylindrical shape with a reinforced bottom to ensure greater durability and protection during transport. The large side opening with a double-slider zipper allows spearguns to be inserted and removed easily and without hassle.

Comfort and Practicality

• Adjustable side straps for hand carrying
• Adjustable shoulder straps, allowing ergonomic handling while on the move

Technical Dimensions

• Length: 172 cm
• Width: 20 cm
• Depth: 20 cm

These specifications ensure compatibility with most freediving spearguns, providing protection and easy transport without compromising handling.

C4 Carbon Fin Bag

The C4 Carbon fin bag is made from waterproof, tear-resistant nylon, ensuring mechanical strength and long-lasting durability when transporting gear for freediving and spearfishing.

The simple, functional design features an adjustable shoulder strap and a dedicated strap, allowing you to comfortably carry fins or other underwater accessories over the shoulder, improving practicality and gear management.

Technical Features

• Length: 110 cm
• Width: 33 cm

The bag is designed to accommodate freediving fins of various sizes, offering a lightweight and versatile solution for transporting your gear.

Extreme Bag 120L by C4: Waterproof Gear Bag for Underwater Gear

Extreme Bag 120L by C4 is a spacious waterproof gear bag designed for carrying freediving, spearfishing, and freediving gear. Its rugged construction ensures optimal protection and practicality during transport.

Materials and Durability

Made from heat-welded Tarpaulin, a waterproof and tear-resistant material, this gear bag provides reliability and long-lasting performance, even in wet and salty environments typical of underwater activities.

Closure Features and Practicality

• Double safety closure: dual-slider zipper combined with elastic hooks, ensuring a watertight seal and easy use.
• External document pocket for quick and secure access to cards and permits.
• Zippered side pocket containing a dedicated changing mat, useful for keeping gear clean and protected during preparation.
• Integrated drain valve for quickly draining excess water, making it easier to rinse and dry gear directly inside the gear bag.

Portability

Extreme Bag features two side handles and an adjustable central handle, designed to provide comfortable, balanced carrying even with bulky, oversized loads typical of freediving and spearfishing gear.

Available Versions

The model is available in two capacities: 90 liters and 120 liters, allowing you to choose the size best suited to your underwater gear transport needs.

C4 Mask Box for Freediving and Spearfishing

The C4 mask box is specifically designed to provide effective protection for freediving masks and other small accessories such as dive computers or keys. Its rigid, lightweight construction allows you to carry the contents safely without compromising their integrity.

Made of thermoformed polyethylene, the case offers optimal mechanical resistance against impacts and compression during transport and diving. The interior is fully lined with polyester fabric, which protects the mask lenses from scratches and abrasion, maintaining transparency and clarity during dives.

Technical Features

• Outer material: thermoformed polyethylene for strength and lightness
• Interior polyester fabric lining for complete protection of delicate surfaces
• Perimeter zipper closure for quick and easy opening
• Dimensions suitable for holding freediving masks and small accessories such as dive computers or keys

Benefits for Freediving and Spearfishing Use

The box ensures organized and safe handling of the mask, reducing the risk of damage from impacts or scratches during transport. The durable material and ergonomic zip-opening design provide quick access to accessories, improving practicality even during dives or travel.

C4 Compression 0.5 mm Open-Heel Socks

Socks designed specifically for use with open-heel freediving fins, ideal for those who need sensitivity, precision, and continuous thrust during finning. They are made from 0.5 mm pre-compressed neoprene, with a smooth outer surface and lined interior to ensure an optimal balance between protection and direct contact with the foot pocket.

The construction incorporates internal taping that reinforces the seams, ensuring the durability of the bonding and long-term stability. The low-profile design reduces bulk while maintaining excellent movement feedback and improving comfort and control during use in the water.

Available Sizes

• S: 35–38
• M: 39–42
• L: 42–44
• XL: 45–47

C4 Dyn Socks in High-Modulus Thermoplastic Polyethylene

The C4 Dyn socks are made from high-modulus thermoplastic polyethylene, a waterproof and cut-resistant material specifically designed for freediving and spearfishing. This choice provides effective protection against water and abrasive agents, ensuring long-lasting durability in fresh and salt water.

Technical features and functionality

• Material: high-modulus thermoplastic polyethylene, waterproof and cut-resistant.
• Non-slip sole to ensure stability when using the fin.
• Ankle reinforcement that keeps the sock snug and prevents the fin from accidentally slipping during finning.

Use and versatility

These socks are versatile and suitable for use both in the pool and at sea. They can be used:

• as substitutes for neoprene socks in warm waters, offering comfort and protection without excessive thermal insulation;
• as oversocks over 2.0 or 3.0 mm neoprene socks in cold waters, to increase thermal insulation while maintaining freedom of movement.

Available Sizes

The C4 Dyn socks are available in five sizes to ensure a precise and functional fit:

• XS
• S
• M
• L
• XL

C4 Finger Socks Toe Socks in Neoprene 0.5 mm

The C4 finger socks toe socks are made from 0.5 mm pre-compressed Neoprene with a smooth outer surface, designed to reduce drag in the water. The lined inner layer provides comfort and improved stability on the foot during use.

Technical Features

• Reduced thickness to minimize bulk and ensure direct contact with the foot pocket, preserving sensitivity and finning efficiency.
• Reinforced internal taping to improve the strength of the glued seams and increase long-term durability.
• Smooth outer surface for better hydrodynamics and reduced drag.
• Internally lined material for greater comfort and to keep the sock stable even during dives.

Applications

The toe socks are suitable for freediving and spearfishing, especially when maximum sensitivity and precision in finning are required—essential factors for optimizing thrust transmission in the water.

Available Sizes

• S: 36–39
• M: 40–43
• L: 44–46

C4 Neoprene 1.5 mm Finger Socks Toe Covers for Freediving and Spearfishing

The C4 finger socks toe covers are foot protectors specifically designed for use with open-heel fins in freediving and spearfishing. Made from 1.5 mm Neoprene, they feature a smooth outer surface that reduces friction during finning and a lined inner layer that ensures optimal comfort and fit.

Technical Features

The reduced 1.5 mm thickness offers an excellent balance of targeted foot protection, thermal insulation, and maintaining precise power transfer, essential for efficient, responsive finning in the water.

Available Sizes

• S: 36–39
• M: 40–43
• L: 44–46

These toe covers are ideal for freedivers and spearfishers who need targeted foot protection without compromising sensitivity and fluidity during underwater finning.

Neoprene Zero C4 Socks for Freediving and Spearfishing

The Neoprene Zero socks by C4 are designed with careful attention to the specific anatomy of the right and left foot, ensuring a precise and comfortable fit. The construction uses three selected technical materials to provide an optimal balance of stretch, thermal protection, and mechanical resistance.

Materials and Construction

• Instep: stretch fabric that promotes comfort and freedom of movement during finning
• Toes: warm, cut-resistant material to effectively protect the extremities from cold and abrasion
• Sole and heel: non-slip reinforcements provide stable grip and increased durability in underwater environments

Technical Specifications

• Available thicknesses: 1.5 mm and 3.0 mm, suitable for different temperatures and diving conditions
• Available Sizes: XS, S, S/M, M, L, XL, XXL, for a precise, customized fit

Functional Features

The differentiated construction and materials used ensure a sock that is durable yet comfortable, essential for keeping the foot warm during freediving and spearfishing. The non-slip inserts improve stability and safety when walking and in the water.

3 mm Double-lined Neoprene Winter Beanie

The winter beanie is made from 3 mm double-lined Neoprene, a material that provides proper thermal protection during freediving and spearfishing in cold waters.

The double lining increases thermal insulation while maintaining excellent stretch and comfort. The elastic structure allows an ergonomic fit to the shape of the head, ensuring a comfortable fit without restricting movement.

Thanks to the fabric’s light weight and flexibility, the beanie provides an effective barrier against heat loss, improving comfort in the water and helping extend freediving session times.

C4 Nylon Buckle Belt for Freediving and Spearfishing

The Nylon Buckle Belt by C4 is designed specifically to meet the needs of freedivers and spearfishers, ensuring strength and durability in the marine environment. The buckle is made from high-strength reinforced nylon, designed to provide secure, reliable fastening during dives.

Materials and Durability

The belt is made from premium-quality silicone, offering significant elasticity with a maximum elongation of 770%. This material stands out for its resistance to saltwater contact, UV rays, and extreme temperature variations, withstanding temperatures from -70°C to +200°C—essential characteristics for underwater use.

Dimensions and Color Options

• Length: 140 cm
• Height: 50 mm
• Thickness: 3.0 mm
• Available colors: Black, White, Brown, Silver

Technical Advantages

• High silicone elasticity for a comfortable, long-lasting fit
• Superior silicone performance compared to traditional rubber, providing greater resistance to weathering and saltwater
• Reinforced nylon buckle resistant to stress during dives and spearfishing activities
• Low maintenance and excellent long-term durability, even with prolonged exposure to the marine environment

C4 Nylon Buckle Belt for Freediving and Spearfishing

The Nylon Buckle Belt by C4 is designed specifically for the needs of freediving and spearfishing, combining high-performance materials with outstanding durability.

The buckle is made from reinforced nylon, a material that ensures high mechanical strength and reliability in the water. The belt, made of silicone, stands out for its remarkable elasticity, with a maximum elongation capacity of 770%, ensuring comfort and adaptability during underwater activity.

Materials and Durability

The silicone used clearly outperforms traditional rubber used for freediving belts, offering superior resistance to saltwater, UV rays, and temperature changes. This material maintains its functional properties across a wide temperature range, from -70°C to +200°C, ensuring performance and durability even in demanding saltwater conditions.

Technical Features

• Belt material: high-elasticity silicone
• Buckle material: durable reinforced nylon
• Maximum silicone elongation: 770%
• Temperature resistance: from -70°C to +200°C
• High resistance to salt and UV rays

This belt is ideal for freediving and spearfishing, offering a reliable, durable, and comfortable solution in the water.

C4 Nylon Buckle Belt for Freediving and Spearfishing

The Nylon Buckle Belt by C4 is specifically designed to meet the needs of freediving and spearfishing, ensuring strength, elasticity, and long-lasting durability.

The buckle is made from high-strength reinforced nylon, providing solid performance and reliability during dives. The belt is made of silicone, a material superior to traditional rubber for freediving belts thanks to its excellent elasticity and resistance to external agents.

Technical features of silicone

• Resistance to extreme temperatures, from -70°C to +200°C
• High resistance to corrosion caused by salt water
• Excellent UV protection, preventing material degradation
• Maximum supported elongation of 770%, ensuring elasticity and adaptability

Dimensional specifications

• Length: 140 cm
• Height: 50 mm
• Thickness: 3.0 mm
• Available in 4 colors: Black, White, Brown, Silver

This silicone belt with nylon buckle is designed to offer comfort and practicality during spearfishing, maintaining stable, long-lasting trim even in saltwater marine environments and during extended dives.

C4 Marseille Belt for Freediving and Spearfishing

The Marseille Belt by C4 is designed specifically for freediving and spearfishing, delivering high-level technical performance and selected materials for the underwater environment.

Materials and Durability

The belt is made from high-quality silicone, a material that far exceeds the performance of the rubber traditionally used in freediving belts. Silicone offers:

• High elasticity for optimal stretch management, up to 570%
• Superior resistance to contact with salt water and UV rays
• High thermal tolerance, from -70°C to +200°C, to ensure integrity even in changing environmental conditions

Dimensions and Variants

• Length: 145 cm
• Height: 50 mm
• Thickness: 5.0 mm
• Available in 5 colors: Black, White, Brown, Silver, Gold

Stainless Steel Marseille Buckle

The quick-release buckle is made from stainless steel, a material chosen for its resistance to corrosion and salt, ensuring reliability and safety during dives.

Benefits for Underwater Use

The use of silicone and the Marseille buckle improves the belt’s functionality in the marine environment through:

• Greater durability and long-term reliability, even with continuous exposure to salt water
• Elasticity that promotes a comfortable fit without constriction and optimal adaptation to the freediver’s movements
• Resistance to weathering and UV rays, ensuring long-term integrity and efficiency