Marco Bardi Lower Back Protection in High-Strength Nylon

The Marco Bardi lower back protection is a device designed to protect the lumbar area during freediving and spearfishing. Made from high-strength Nylon, this shaped rigid plate inserts easily into the weight belt, distributing the load over a wider area and reducing the risk of lower back inflammation.

Technical and Functional Features

• Material: high-strength Nylon for durability and toughness
• Shaped design: fits the natural curve of the lower back perfectly to help limit and correct excessive arching of the back
• Quick slots: allow easy insertion into the belt without removing the weights
• Non-slip: internal bends prevent the protection from shifting during the dive

Benefits During Use in the Water

The protection helps maintain a more horizontal position in the water, improving hydrodynamics and promoting optimal trim during spearfishing or freediving sessions. Load distribution reduces strain on the back, helping limit inflammation and lower back pain caused by the concentrated weight of the ballast on the belt.

Application

1. Insert the rigid plate into the slots of the weight belt
2. Position it over the lower back area
3. Check that the protection is stable and secured by the non-slip bends

C4 Elastic Line for Freediving Float

The C4 elastic line is designed to keep the float steadily positioned directly above the diver during freediving or spearfishing sessions, reducing the risk of losing it. Thanks to its ability to stretch up to three times its relaxed length, it effectively absorbs tension caused by waves and wind, ensuring safer, more controlled float management.

Technical Features

• Stretch: up to 3 times its relaxed length with no effort
• Materials: durable and flexible elastic cord, high-durability nylon swivel snap hooks at the ends
• Available lengths: 4 meters, 8 meters, 12 meters

Functional Benefits

The elasticity of the cord helps counteract the dynamic forces of water and wind, keeping the float in an optimal position relative to the diver, thereby improving safety and gear management during freediving and spearfishing.

The nylon swivel snap hooks ensure a reliable, twist-free connection, making it easier to attach and adjust the line to the float and underwater anchor.

200 C4 Carbon Foot Pockets for Freediving and Spearfishing

The 200 Foot Pockets by C4 Carbon are an innovative solution designed specifically for freediving and spearfishing. Featuring a lightweight, hydrodynamic design, these foot pockets significantly reduce effort during finning, improving efficiency.

Materials and Construction

Made with a soft, self-molding thermoplastic elastomer upper, they adapt perfectly to the foot, ensuring comfort and a customized fit. The footbed is made of rigid plastic and is engineered to transfer energy to the blade optimally, ensuring effective thrust during finning.

Technical Features and Innovations

• Glue-free mounting to the blade for greater flexibility and increased ankle rotation.
• Neutral fit designed to eliminate drag caused by unbalanced posture, improving the fluidity of underwater movement.
• Six integrated threaded inserts to adjust the blade position in 3 different settings, offering customized options based on the needs of the freediver or spearfisher.
• 3D overmolded water rails with O.P.S. shaping for additional protection and improved ergonomics.

Sizes and Compatibility

Available in sizes 36/37, 38/39, 40/41, 41/42, 42/43, 43/44, and 44/45, following the specifications of C4’s 200 line.

Note: Due to the reduced dimensions of the attachment, the 200 foot pockets are compatible exclusively with C4 200 line blades.

Colors

• Upper: Black
• Footbed: Green

Benefits for Freediving and Spearfishing

These foot pockets offer optimized biomechanics that help reduce fatigue during finning thanks to a neutral fit and improved energy transfer. The ability to adjust the blade position makes it easier to adapt to different swimming styles and spearfishing conditions, improving precision and comfort during the dive.

200 C4 Carbon Foot Pockets for Freediving and Spearfishing

The 200 Foot Pockets are an innovative, technical solution developed by C4 Carbon for freediving and spearfishing. Designed to integrate exclusively with the blades in the 200 line, these foot pockets stand out for their light weight, hydrodynamics, and improved functionality compared to traditional models.

Technical Features and Materials

The construction is divided into two complementary components:

• Soft, self-molding upper: made of thermoplastic elastomer, it provides an ergonomic, comfortable fit to the shape of the foot, ensuring elasticity and thermal comfort.
• Rigid plastic footbed: designed to transfer energy effectively to the blade during the fin stroke, improving thrust transmission and responsiveness.

Biomechanics and Trim

A distinctive feature of the 200 Foot Pockets is the neutral fit, developed to maintain the diver’s correct trim by eliminating drag caused by unbalanced posture. This allows for a smoother fin stroke and a wider ankle rotation, reducing muscle fatigue during the dive.

Adjustments and Compatibility

The foot pockets are equipped with six threaded inserts that allow the blade position to be adjusted to three different heights, providing effective customization to suit the specific biomechanical needs of the spearfisher.

Important note: due to the reduced size of the attachment points, these foot pockets are compatible exclusively with C4 200 line blades.

Additional Details

• Water rails: 3D overmolded with O.P.S shaping for increased protection and improved hydrodynamics.
• Available Sizes: 36/37, 38/39, 40/41, 41/42, 42/43, 43/44, 44/45.
• Colors: black upper, red footbed.
• Three times lighter than traditional foot pockets, reducing effort during the fin stroke.

C4 Carbon 200 Foot Pockets for Freediving and Spearfishing

The 200 Foot Pockets by C4 Carbon are an innovative, technical solution designed for freedivers and spearfishers looking for light weight, hydrodynamics, and maximum efficiency in thrust transfer during finning.

Design and Materials

These foot pockets are made of two separate parts:

• A soft, self-molding upper in thermoplastic elastomer that adapts perfectly to the shape of the foot, ensuring comfort and elasticity.
• A rigid plastic insole designed to optimally transfer energy to the blade, improving responsiveness during finning.

The construction without bonding to the blade promotes greater flexibility and a wider ankle rotation, improving movement efficiency in the water.

Technical Features and Functionality

• Neutral fit: designed to ensure balanced diver trim, reducing drag caused by unbalanced posture.
• Custom blade position adjustment: thanks to six threaded inserts and three different positions, the blade trim can be adapted to the user’s specific needs.
• 3D overmolded water rails with O.P.S. shaping for effective protection and improved hydrodynamics.

Technical Specifications

• Exclusive compatibility with blades from the C4 200 line, due to the exclusive compact attachment.
• Available in 7 sizes: 36/37, 38/39, 40/41, 41/42, 42/43, 43/44, 44/45.
• Color: black upper, white insole.
• Three times lighter than traditional foot pockets, optimized to reduce effort during finning.

Benefits for Freediving and Spearfishing

The combination of high-performance materials and the modular structure of the 200 Foot Pockets enables more efficient energy transfer, smoother movement, and superior comfort thanks to the self-molding fit.

The ability to customize the blade trim ensures precision and adaptability based on freediving conditions and spearfishing style.

Foot Pocket 250 C4 for Freediving and Spearfishing

The 250 Foot Pocket by C4 represents the evolution of the 200 and 300 lines, designed to provide superior lightness and elasticity while optimizing comfort and thrust transmission during finning.

Technical Features

• Rigid insole in integrated co-molded polypropylene, for improved biomechanical support and greater efficiency in power transmission.
• Soft thermorubber upper, elastic, ensuring a comfortable fit even without fin socks, increasing freedom of movement and comfort under load.
• Rails reduced to a minimum, simplifying blade attachment and reducing the overall weight of the foot pocket for a more balanced trim in the water.
• Single-screw fastening system that speeds up assembly and disassembly, improving ease of use while freediving.
• Low weight of just 246 grams, a feature that contributes to greater agility during finning and reduced muscle fatigue.

Sizes and Color

• Available in 9 sizes: 36/37, 38/39, 39/40, 40/41, 41/42, 42/43, 43/44, 44/45, 46/47.
• Black color.

Benefits for Freediving and Spearfishing

The 250 C4 foot pocket combines lightness, elasticity, and a rigid insole to deliver an excellent balance of comfort and responsiveness. The reduced rails ensure better blade efficiency, allowing a smoother, less tiring kick, essential for freediving and spearfishing.

C4 250 Foot Pocket for Freediving and Spearfishing

The 250 foot pockets are a major evolution of the 200 and 300 series by C4, designed specifically for freedivers and spearfishers who demand lightness, elasticity, and optimal comfort during the dive.

Technical Features

• Soft thermorubber upper with elastic properties, designed to ensure a comfortable fit even without socks.
• Rigid polypropylene insole co-molded internally, providing stiffness and stability in power transfer during the fin stroke.
• Minimized side rails, reducing weight and making it easier to attach the foot pocket to the blade, optimizing the system’s hydrodynamic efficiency.
• Single-screw fastening system that speeds up assembly and disassembly, ensuring quick, practical gear preparation.
• Total weight of only 246 grams, helping reduce fatigue in the water and improving finning fluidity.

Benefits

The combination of light weight, soft materials, and a rigid insole allows the 250 foot pockets to deliver an ideal balance between comfort and effective power transfer to the blades. The third-degree preformed anatomical structure securely wraps the foot, improving stability during underwater activity.

Specifications and Availability

• Available in 9 sizes: 36/37, 38/39, 39/40, 40/41, 41/42, 42/43, 43/44, 44/45, 46/47
• Color: White

300 C4 Carbon Foot Pockets

The 300 Foot Pockets represent the latest innovation from C4 carbon in footwear for freediving and spearfishing. Weighing just over 300 grams, these foot pockets offer outstanding comfort and an extremely low volume that optimizes hydrodynamics during the fin stroke.

Design and Technical Features

The design of the 300 Foot Pockets is based on a balance between tradition, innovation, and technical functionality, with engineering focused on reducing volume and, consequently, water resistance and effort during movement.

• Reduced internal volume, a key element for minimizing perceived weight in the water
• Actual weight of just 315 grams in size 40-41, about half that of traditional foot pockets (600-750 grams)
• Material with mechanical resistance seven times higher than conventional materials
• Sinking characteristic, functional for trim during freediving and spearfishing

Anatomy and Comfort

The anatomy of the 300 Foot Pockets is derived from the overlapping anatomical shapes of the Mustang foot pockets, with a maintained third-degree pre-forming. The result is a unique, very enveloping fit that effectively distributes energy across the entire contact surface of the foot.

• Minimal thickness in contact with the foot for high adaptability and comfort
• Reduced painful pressure points
• More uniform energy transmission, improving finning efficiency

Hydrodynamics and Design

The shapes of the 300 Foot Pockets are designed to promote a continuous, uninterrupted hydrodynamic flow, eliminating steps and surface breaks. This results in a significant reduction in drag in the water and consequently less fatigue.

• Smooth, glossy surfaces for optimal glide while diving
• Design inspired by the natural efficiency of aquatic forms

Additional Details

• Colors: Black, White, and Silver
• Sold individually
• Compatible with C4 line blades or adaptable via kit to blades from other brands to improve thrust transmission

C4 Carbon 300 Foot Pockets for Freediving and Spearfishing

The 300 Foot Pockets represent an innovation in Freediving and spearfishing equipment by C4 Carbon. Their name comes from their low weight, just over 300 grams, which helps significantly reduce fatigue during underwater finning.

Technical Features and Materials

Made with an innovative material that provides mechanical strength seven times higher than traditional materials, these foot pockets combine lightness and toughness without compromising durability. The internal volume has been optimized to ensure high ergonomics, minimizing thickness in contact with the foot, improving comfort and adaptability during the dive.

Anatomy and Comfort

The anatomy of the 300 Foot Pockets provides a unique fit, achieved by overlapping the shapes of the anatomical Mustang shoes, with a third-degree pre-forming that increases their effectiveness. Energy transfer is distributed evenly across the entire contact surface, preventing irritation points or stiffness. This allows for better blade stability during the kick, with reduced pain and greater propulsion efficiency.

Hydrodynamics and Design

The design of the 300 Foot Pockets is aimed at minimizing hydrodynamic drag: the lines are fluid and continuous, with no steps or interruptions, to facilitate water flow. The glossy surface further contributes to smooth glide, optimizing fluid movement in the water and reducing fatigue for the spearfisher.

Technical Specifications

• Weight: approximately 315 grams in size 40-41
• Reduced internal volume for lower energy expenditure during finning
• High mechanical-strength material
• Snug anatomical fit with 3° pre-forming
  
• Available colors: Black, White, and Silver

Use and Compatibility

The foot pockets are designed for use with blades from the C4 line, but can also be adapted to other blades using the dedicated kit, to improve thrust transfer and finning efficiency.

Attention: The 300 Foot Pockets are sold as a single piece.

C4 Carbon 300 Foot Pockets for Freediving and Spearfishing

The 300 Foot Pockets are an innovation in freediving and spearfishing equipment by C4 Carbon. Their name comes from their low weight, just over 300 grams, which helps significantly reduce fatigue during underwater finning.

Technical Features and Materials

Made from an innovative material that provides mechanical strength seven times greater than traditional materials, these foot pockets combine lightness and strength without compromising durability. The internal volume has been optimized to ensure high ergonomics, minimizing thickness in contact with the foot, improving comfort and fit adaptability during the dive.

Anatomy and Comfort

The anatomy of the 300 Foot Pockets provides a unique fit, achieved by overlapping the shapes of the Mustang anatomical shoes, with third-degree preforming that increases their effectiveness. Energy transfer is distributed evenly across the entire contact surface, preventing irritation points or stiffness. This allows better blade stability during the kick, with reduced pain and greater propulsion efficiency.

Hydrodynamics and Design

The design of the 300 Foot Pockets is aimed at minimizing hydrodynamic drag: the lines are smooth and continuous, with no steps or interruptions, to help water flow. The glossy surface further enhances glide, optimizing fluid movement in the water and reducing fatigue for the spearfisher.

Technical Specifications

• Weight: approximately 315 grams in size 40-41
• Reduced internal volume for lower energy expenditure during finning
• High mechanical-strength material
• Snug anatomical fit with 3° preforming
• Available in 3 sizes: 38/39, 42/43, 44/45
• Available colors: Black, White, Blue, Brown, Silver

Use and Compatibility

The foot pockets are designed for use with C4 line blades, but can also be adapted to other blades with the dedicated kit, improving thrust transfer and finning efficiency.

Warning: The 300 Foot Pockets are sold as a single piece.

C4 SPORTECH Foot Pockets for Freediving and Spearfishing

The C4 SPORTECH foot pockets are designed specifically for the needs of freedivers and spearfishers, ensuring extended use with particular attention to ergonomics and comfort. Made from silicone, they offer a soft, progressive fit, minimizing pressure points during long in-water sessions.

Design and Technical Specifications

• Open heel: allows greater freedom of movement and makes the foot pocket easier to put on and remove.
• Right/left differentiated anatomical design: derived from the PROTech model, it ensures stable, natural foot positioning, improving trim and power transfer during finning.

Comfort and Compatibility

The SPORTECH foot pockets stand out for their high level of comfort and versatility, making them ideal for frequent, non-competitive use in freediving and spearfishing. They are compatible exclusively with C4 SPORTECH blades, ensuring an optimal pairing and efficient power transfer in the water.

Mimetic Back Weight with Fringes C4 by Marco Bardi

The C4 mimetic back weight with fringes, designed by Marco Bardi, is an adjustable Weight system ideal for spearfishing and freediving. Its load capacity ranges from 2 to 6 kg, allowing precise weight adjustment based on individual needs.

Made with elastic and adjustable materials, it ensures a comfortable and secure fit, promoting freedom of movement during dives. The mimetic design with fringes helps reduce visibility in the water, improving camouflage.

Main technical features

• Adjustable Weight from 2 to 6 kg
• Elastic material for excellent body adaptability
• Simple, practical adjustment for proper trim
• Mimetic design with fringes for improved underwater camouflage
• Comfortable donning and secure fastening during freediving sessions

C4 Modular Back Weight by Marco Bardi

The C4 Modular Back Weight, developed in collaboration with Marco Bardi, is a weight system specifically designed for freediving and spearfishing. Engineered to ensure efficient weight distribution, it offers a modular capacity from 2 to 12 kg, allowing you to adapt your ballast setup to individual needs during dives.

The weight can be positioned over a large surface area of the Back Weight, ensuring optimal balance and improving comfort in the water. Ease of use is ensured by quick drying and the ability to adjust the configuration even during spearfishing sessions, making real-time customization easier.

The lightweight, durable material is designed to ensure long-lasting performance and practicality without compromising freedom of movement or finning efficiency.

Main features:

• Modular weight capacity from 2 to 12 kg
• Weight distribution over a large surface area for improved balance
• Easy adjustment even during underwater activity
• Quick-drying material
• Ergonomic design for comfort and practicality
• Color: Black
• Weight not included, to be purchased separately

1 KG Segment for C4 Dyno Freediving Neck Weight

The 1 kg segment is designed specifically for the C4 Dyno neck weight, an essential component for freedivers who need customization and comfort when balancing weight during freediving activities.

The screw fastening system allows multiple segments to be assembled and combined, adapting the overall weight to the individual needs of the freediver. This modularity enables precise, functional adjustment, ensuring optimal balance during the dive.

A distinctive feature of this segment is its semi-mobile behavior once secured. This flexibility allows the segments to move in sync with the spine, preventing restriction and preserving natural freedom of movement during finning and gun tracking.

Main Features

• Material: made to ensure mechanical strength and long-lasting durability
• Fastening system: screw and axle included for secure, stable assembly
• Color: white, with a version also available in black
• Compatibility: exclusively for the C4 Dyno neck weight designed for freediving
• Semi-mobile design to follow the movements of the spine without restriction

This segment is an ideal technical solution for freediving and spearfishing, where the ability to fine-tune weight and maintain optimal ergonomics is essential for safety and efficiency during the dive.

1 Kg Segment for C4 Dyno Neck Weight – Freediving Gear

The 1 Kg segment is specifically designed for use with the C4 Dyno neck weight, an essential component in freediving and spearfishing gear. This segment lets you customize the neck weight in a modular way, ensuring precise adjustment to the freediver’s needs.

Technical features

• Weight: 1 kilogram
• Material: durable and suitable for underwater use
• Color: Black
• Attachment system: screw with axle included for secure, easy assembly
• Modularity: multiple segments can be combined and assembled to adjust the overall weight

Functionality and benefits

The screw attachment system ensures the segments are semi-mobile, allowing them to follow the natural movements of the spine without restricting freedom of movement. This feature improves comfort during the dive, maintaining balanced, stable trim in the water.

The system’s modularity allows the freediver to precisely customize weight distribution based on diving style and specific conditions, optimizing efficiency and underwater maneuverability.

1 Kg Segment for Dyno C4 Neck Weight

Single 1 kg segment specifically designed for the Dyno C4 neck weight, developed for use in freediving and spearfishing. This component allows the neck weight to be customized modularly, thanks to the screw fastening system.

Technical Features

• Material and construction: built to ensure strength and durability during the dive.
• Screw fastening system: allows the segments to be assembled and combined precisely, adapting them to the individual needs of the freediver.
• Semi-mobile movement: the secured segments follow the natural movements of the spine without limiting flexibility, improving comfort and freedom of movement in the water.
• Color: red for easy identification and weight management.

Included in the Package

• 1 kg segment
• Fixing pin
• Screw for securely locking the segment onto the Dyno C4 neck weight

280-Gram Segment for C4 Dyno Freediving Neck Weight

This 280-gram segment is designed specifically for the C4 Dyno neck weight, a technical device dedicated to freedivers. Made from durable materials and finished in black, the segment integrates into the modular system to provide a customizable and functional solution during freediving activities.

Technical Features

• Screw fastening: The system allows multiple segments to be combined, enabling a configuration that adapts to the individual needs of the freediver.
• Semi-mobile movement: Once fastened, the segments retain a degree of mobility, following the natural curve of the vertebrae and ensuring no restrictions on spinal movement.
• Material and weight: The segment weighs 280 grams, offering a good balance between durability and lightness, ideal for avoiding unnecessary load on posture during a dive.
• Color: Black, for a clean, understated look and good integration with spearfishing gear.
• Complete package: The product is supplied with pin and screw for immediate attachment to the C4 Dyno neck weight.

Functionality and Benefits

The modular, semi-moving design of the segment is intended to maintain freedom of movement of the spine during freediving dives, reducing possible discomfort or restriction. The structure allows optimal gear customization, improving comfort and practicality in everyday use.

280-Gram Segment for Dyno C4 Neck Weight Specifically for Freediving

The segment is designed for the Dyno C4 neck weight, a device developed exclusively for the needs of spearfishing and freediving.

Made with a lightweight 280-gram structure, it ensures optimal load management without affecting underwater mobility.

Attachment System and Functionality

The segment uses a screw fastening system that allows multiple segments to be combined and assembled in a modular way, adapting them to the freediver’s anatomical profile and specific needs.

Once secured, the pieces remain semi-mobile, allowing excellent fluidity of vertebral movement without limiting the spine’s natural flexibility during the dive.

Technical Features

• Color: White
• Materials selected to ensure mechanical strength and durability in underwater environments
• Complete with pin and screw for fastening, for precise and secure assembly

500-Gram Segment for C4 Freediving Neck Weights

This 500-gram segment is designed for both C4 neck weights, Dyno and D&D, a technical device dedicated to freedivers. Made from durable materials and finished in gray, the segment integrates into the modular system to provide a customizable and functional solution during freediving activities.

Technical Features

• Screw fastening: The system allows multiple segments to be combined, enabling a configuration adaptable to the individual needs of the freediver.
• Semi-mobile movement: After fastening, the segments maintain a certain degree of mobility, following the natural alignment of the vertebrae and ensuring no restrictions on spinal movement.
• Material and weight: The segment weighs 500 grams, offering a good balance between durability and lightness, ideal for avoiding added strain on posture during dives.
• Color: Gray, for a clean look and good integration with spearfishing equipment.
• Complete package: The product is supplied with an axle and screw for immediate fastening on C4 neck weights.

Functionality and Benefits

The segment’s modular, semi-moving design is intended to maintain freedom of movement in the spine during freediving dives, reducing possible discomfort or restriction. The structure allows optimal customization of the equipment, improving comfort and practicality in everyday use.

380-Gram Segment for C4 Freediving Neck Weights

This 380-gram segment is designed for both C4 neck weights, Dyno and D&D, a technical device dedicated to freedivers. Made from durable materials and finished in gray, the segment integrates into the modular system to provide a customizable and functional solution during freediving activity.

Technical Features

• Screw fastening: The system allows multiple segments to be combined, enabling a configuration that can be adapted to the individual needs of the freediver.
• Semi-mobile movement: Once fastened, the segments retain a degree of mobility, following the natural alignment of the vertebrae and ensuring no limitations to spinal movement.
• Material and weight: The segment weighs 380 grams, offering a good balance between strength and lightness, ideal for not weighing down posture during the dive.
• Color: Gray, for a clean look and good integration with spearfishing equipment.
• Complete package: The product is supplied with axle and screw for immediate attachment to C4 neck weights.

Functionality and Benefits

The modular, semi-moving design of the segment is intended to preserve the freedom of movement of the spine during freediving, reducing possible discomfort or restriction. The structure allows optimal customization of the equipment, improving comfort and practicality in everyday use.

280-Gram Segment for C4 Dyno Freediving Collar

This 280-gram segment is designed for both C4 collars, Dyno and D&D, a technical device dedicated to freedivers. Made from durable materials and finished in black, the segment integrates into the modular system to provide a customizable and functional solution during freediving activity.

Technical Features

• Screw fastening: The system allows multiple segments to be combined, enabling a configuration that can be adapted to the individual needs of the freediver.
• Semi-mobile movement: Once fastened, the segments retain a degree of mobility, following the natural line of the vertebrae and ensuring no restriction in spinal movement.
• Material and weight: The segment weighs 280 grams, offering a good balance between durability and lightness, ideal for avoiding added strain on posture during the dive.
• Color: Gray, for a subtle look and good integration with spearfishing gear.
• Complete package: The product is supplied with pin and screw for immediate fastening on C4 collars.

Functionality and Benefits

The modular, semi-moving design of the segment is intended to maintain freedom of movement of the spine during freediving sessions, reducing possible discomfort or restriction. The structure allows optimal gear customization, improving comfort and practicality in everyday use.

C4 Universal Stainless Steel Bracket

The C4 universal bracket is made of stainless steel, ensuring high mechanical strength and durability in the marine environment. This material provides robustness and long service life without corrosion, an essential feature for spearfishing and freediving equipment.

Designed to provide stability and easy installation, the bracket can be fitted quickly and securely, allowing efficient assembly of underwater components.

Compatibility and Use

• Compatible with all C4 slides, enabling a modular and versatile system for spearguns and accessories.
• Universal system suitable for various configurations in freediving and spearfishing equipment.

C4 Universal Stainless Steel Slide

The C4 universal slide is made with the same stainless steel as the bracket, ensuring consistent strength and corrosion protection.

It allows components to be fastened with precision and solidity, ensuring stable tracking and balanced trim for the spearfishing gun.

Compatibility

• Compatible with all C4 brackets, making it easy to adapt and customize underwater configurations.

C4 Anatomical Insoles for Freediving and Spearfishing

The C4 anatomical insoles are specifically designed for freediving and spearfishing users, with special attention to shape, design, and materials to improve comfort and performance in the water.

The anatomical structure of the insoles helps reduce empty spaces inside the foot pockets, often caused by the symmetrical shape of the right and left foot. Without dedicated insoles, these spaces can lead to reduced fit and heat loss.

Technical Features and Benefits

• Comfort and fit: the insoles help support the plantar arch, ensuring a precise, stable fit inside the foot pocket and reducing fatigue during finning.
• Improved finning control: the better fit allows more efficient transfer of propulsive force, optimizing thrust and fin responsiveness during freediving.
• Thermal insulation: reducing empty spaces limits the flow of cold water, keeping the foot at a more stable temperature and reducing the risk of muscle cramps in the water.
• Compatibility: perfectly adaptable to C4 foot pockets and suitable for use with most foot pockets on the market, thanks to the option to trim them along predefined lines.

Size Specifications

The C4 insoles are available in three size ranges, covering a wide range of usable Sizes:

• 38-41
• 41-43
• 44-47

The insole can be shaped along the pre-marked cutting line to achieve a custom size and optimal fit inside the foot pocket.

Ultrastretch C4 Undersuit for Freediving and Spearfishing

The Ultrastretch C4 Undersuit is made with smooth neoprene on the outside and stretch-lined neoprene on the inside, delivering an excellent combination of comfort and flexibility. The pre-shaped cut is designed to fit the body perfectly, with extra length in the pelvic area to optimize thermal retention during freediving sessions and spearfishing activities.

The longer design over the pelvis improves thermal protection under the wetsuit, making it especially useful during seasonal transitions or for those who prefer to avoid overly thick wetsuits. This undersuit is compatible with most wetsuits on the market, making it extremely versatile and practical for freediving or spearfishing.

Technical features

• Material: smooth neoprene on the outside, stretch-lined neoprene on the inside
• Thickness: 2 mm
• Pre-shaped cut with extended coverage in the pelvic area for greater thermal protection
• Suitable as an undersuit for all types of wetsuits

The stretch of the fabric ensures freedom of movement and unrestricted comfort during dives, while the reduced thickness provides lightness and quick donning. The Ultrastretch C4 undersuit helps keep body temperature stable, increasing the efficiency of your freediving and spearfishing sessions.

Ultrastretch C4 Undersuit with Hood

The Ultrastretch C4 undersuit is designed with a pre-shaped cut, featuring greater extension in the pelvic area to ensure enhanced thermal protection during freediving and spearfishing sessions. The integrated hood further improves insulation and thermal comfort.

Made with 2 mm smooth Neoprene on the outside and lined internally with stretch material, this undersuit provides excellent elasticity and freedom of movement, making it easy to wear under any type of freediving wetsuit.

Thanks to its construction and calibrated thickness, it is ideal during seasonal transitions or for those who prefer balanced thermal protection without switching to thicker wetsuits. Its lightweight design and ease of use help optimize comfort in the water while maintaining good thermoregulation efficiency.

Main technical features

• 2 mm smooth Neoprene exterior for mechanical resistance and hydrodynamic performance
• Stretch inner lining for improved fit and comfort
• Pre-shaped cut with greater length in the pelvic area for enhanced thermal protection
• Integrated hood for effective coverage and insulation
• Compatible with all wetsuits currently on the market
• Available in four sizes: 2, 3, 4, and 5

Stainless Steel Slide for Gladius and Mr. Carbon 2

This stainless steel slide is specifically designed for Gladius and Mr. Carbon 2 spearguns, ensuring a quick coupling with the C4 universal bracket. Its robust construction provides mechanical strength and durability in marine environments.

The slide allows you to mount cameras for stable, vibration-free underwater footage, improving recording quality during freediving and spearfishing.

Technical Features

• Material: stainless steel for high corrosion resistance
• Compatibility: for Gladius and Mr. Carbon 2 spearguns
• Quick coupling with C4 universal bracket
• Adaptable to other spearguns using two mounting screws
• Supports cameras for smooth, vibration-free footage

Mounting and Adaptability

The slide installs easily on the C4 universal bracket via a quick-release system. It can also be adapted to other spearguns with two simple screws, offering practicality and versatility during freediving and spearfishing.

C4 Luxo Dive Light

The Luxo light by C4 is designed specifically for freediving and spearfishing, combining compact dimensions with high light output.

The housing is made from anodized aluminum, a material that ensures light weight, mechanical strength, and durability in underwater environments, making it easier to handle during dives.

The LED light source delivers a beam intensity of 20,000 lux, providing effective illumination in spearfishing situations where underwater visibility is critical.

Activation is via a magnetic slide switch, designed for simple, immediate use even when wearing freediving gloves, improving practicality in underwater conditions.

• Anodized aluminum body for strength and light weight
• 20,000-lux LED light beam
• Magnetic slide switch, easy to operate with gloves
• Compact size for easy transport and handling

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.

Extreme 60L Waterproof Backpack for Freediving and Spearfishing Gear

Extreme 60L is a waterproof backpack made from PVC Tarpaulin, a highly durable, waterproof, and tear-resistant material, ideal for carrying freediving and spearfishing gear.

With a capacity of 60 liters, this backpack lets you comfortably carry all the essential underwater gear while keeping it protected from water and external elements.

Technical Features and Functionality

• Large capacity and ergonomic shape for carrying wetsuits, cylinders, accessories, and apparel specifically for freediving and spearfishing
• Adjustable side elastic attachments for securely and conveniently fastening spearguns
• Dedicated front pocket for carrying fins, with a top clip opening for easy access and watertight closure
• Adjustable shoulder straps with a central safety buckle to ensure stability and comfort while on the move

Materials and Durability

The PVC Tarpaulin used provides mechanical resistance to abrasion, complete waterproofing, and long-lasting durability even in marine environments. These features ensure effective protection for freediving and spearfishing equipment during transport and dive sessions.

Comfort and Ease of Use

The Extreme 60L backpack is designed to make it easier to carry long, bulky gear such as fins and spearguns, thanks to the external attachments and dedicated pocket, without compromising handling. The adjustable shoulder straps improve weight distribution and stability, offering superior comfort during long preparation sessions or when moving to dive spots.

C4 Light Backpack - Marco Bardi Collection

The C4 Light Backpack is designed specifically for the needs of freedivers and spearfishers, prioritizing the combination of light weight and durability. Made from a tear-resistant technical fabric, it ensures long-lasting performance and optimal protection for its contents during transport.

The minimalist, functional design makes it easy to carry freediving gear or specific apparel without adding excessive weight, improving comfort when traveling to your dive spots.

Main features:

• Abrasion- and tear-resistant material for long service life, even with extended use in marine environments
• Lightweight construction for easy carrying without compromising capacity
• Essential design, optimized for use in freediving and spearfishing, with a focus on practicality and reliability

The C4 Light Backpack is the ideal solution for anyone looking for a technical, functional way to manage equipment during freediving sessions, allowing efficient preparation and better organization before and after the dive.

Standard Cordura C4 Fin Bag

The Standard Cordura Fin Bag by C4 is made from waterproof ripstop nylon, ensuring mechanical strength and long-lasting durability, even in underwater environments.

Designed as a bag/backpack, it allows you to easily carry your fins and part of your freediving and spearfishing gear, optimizing space and practicality.

Main features

• Cordura structure resistant to tensile stress and abrasion
• Dedicated external pocket for storing a mask, snorkel, or other essential freediving accessories
• Versatile design that combines functionality and comfort while traveling

This bag is ideal for freedivers and spearfishers who need a reliable storage solution for transporting their specialized gear, maintaining a balance between compactness and carrying capacity.

Top Volare Bag by C4

The Top Volare Bag by C4 is made from PVC Tarpaulin, a durable, waterproof, and tear-resistant material, ideal for protecting freediving and spearfishing gear.

This bag/backpack is designed to fit fins of any size currently available on the market, while also providing space for a wide range of underwater gear.

It can comfortably hold a wetsuit, gloves, booties, and other essential accessories for freediving sessions, ensuring practicality and easy transport.

Main Features

• Material: waterproof and tear-resistant PVC Tarpaulin
• Capacity: compatible with long fins and complete gear
• Use: ideal for carrying wetsuits, gloves, booties, and spearfishing accessories
• Design: large bag/backpack for efficient gear management