C4

Wetsuit Pants Valve - "Pee Valve"

The valve, commonly known as a "pee valve," is designed to be installed on wetsuit pants, allowing you to urinate without having to remove your entire setup. This accessory helps maintain thermal insulation and protection during spearfishing and freediving sessions.

Its simple installation ensures practicality and extended comfort, which is especially important during cold-water dives, where any heat loss can compromise the duration and safety of the underwater activity.

This technical component is essential for long-duration dives, preventing interruptions and minimizing body heat loss, thereby improving efficiency and performance during spearfishing.

The wetsuit valve is an essential item for freedivers and spearfishers diving in cold-water conditions, ensuring comfort and uninterrupted use.

C4 Float for Buoy Line

The C4 float for buoy line is an accessory specifically designed for spearfishing. It allows the line to rise vertically from the diver, making it easier to manage and locate.

Technical Features

• Compatible with any type of line used in spearfishing
• Adjustable design to suit different operational needs
• Ensures the line rises vertically from the anchor point

Functional Advantages

The float makes it easy to immediately locate the exact position of the line on the bottom, simplifying retrieval operations and improving safety during freediving activity. Its adjustability allows better management of line tension and position, optimizing efficiency while spearfishing.

C4 Carbon Waterproof and Tear-Resistant Nylon Fins Bag

The C4 Carbon fins bag is made from waterproof, tear-resistant nylon, providing effective protection and mechanical durability when transporting freediving and spearfishing gear.

Designed to make carrying long fins easier, the bag features an adjustable shoulder strap and an additional strap that lets you comfortably carry the bag over your shoulder, improving practicality when moving around in the water or on land.

Technical Features

• Length: 130 cm, suitable for longer fins
• Width: 33 cm, provides enough room for fins and other accessories
• Material: waterproof, tear-resistant nylon

The bag’s compact, lightweight construction makes it ideal for keeping freediving gear organized, preserving its integrity thanks to the durability of the nylon and the practicality of the carry straps.

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.

C4 Mounting Screw Kit for 250 Foot Pockets

The mounting screw kit is specifically designed for the 250 Foot Pockets from C4, allowing quick and secure attachment to spearfishing blades. The screws, featuring M6 threads, ensure precise installation with hand-tightening nuts, making attachment easy without the need for tools.

Technical Features

• Thread: M6
• Nut type: Hand-tightening for quick and easy assembly
• Compatibility: C4 250 Foot Pockets model
• Color: Black
• Quantity: Complete kit for mounting one pair of foot pockets

Benefits of Use

This kit ensures a stable connection between the foot pocket and the blade, maintaining the optimal alignment required for efficient power transfer during freediving finning. The choice of hand-tightening nuts improves practicality during assembly and maintenance, reducing setup time even when gear needs to be prepared quickly.

Water Rails Kit for Carbon or Composite Blades

The Water Rails kit is made of rubber and specifically designed for installation on carbon or composite blades used in freediving and spearfishing. This replacement kit is compatible with C4 blades and other brands, providing a simple and functional upgrade.

Technical features

• Height: 10.0 mm
• Length: 1 meter
• Constant-type side profiles
• Material: rubber suitable for mechanical strength in underwater environments

Application

The side profiles are attached to the blade by bonding with cyanoacrylate glue, ensuring a stable and long-lasting hold. This type of installation helps optimize the blade’s hydrodynamics, improving finning smoothness and responsiveness when moving through the water.

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.

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.

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.

Absolute Cleaner: Specific Degreaser for Freediving and Spearfishing Masks

The result of a collaboration between C4 and Real Chimica, the well-known manufacturer of Chanteclair, Absolute Cleaner is an innovative, patented product for cleaning freediving masks. Ideal for permanently removing silicone oils from the glass lenses of new or used masks, it helps eliminate one of the main causes of fogging during dives.

Technical Features and Benefits

• Specific, patented formula for freediving and spearfishing masks that effectively removes silicone oils without damaging plastic parts or the skirt
• Solves the problem of the oily film that forms on the lenses after the silicone molding process at high temperatures
• Extensively tested and certified to ensure deep, safe cleaning of glass surfaces
• Compatible with new or used masks that have fogging issues caused by silicone residue

Instructions for Use

1. Spray the undiluted product on both surfaces of the lenses and on the skirt area before wetting them
2. Scrub the inner and outer lens surfaces vigorously for 4-5 minutes with a toothbrush or a sturdy cloth
3. Let the product work for at least 10 minutes, then rinse the mask thoroughly
4. Repeat the entire procedure (steps 1, 2, and 3) for optimal results

Note: It is not necessary to repeat the cleaning immediately before using the mask.

Applications and Benefits

Absolute Cleaner is a definitive solution for maintaining freediving and spearfishing masks, improving clarity and reducing the risk of fogging caused by silicone residue. It ensures a clear, consistent field of vision, optimizing diving conditions and underwater safety.

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 Cap for Freediving and Swimming

The C4 cap is designed specifically for freediving and swimming, ensuring comfort and functionality during dives and pool sessions. Made from high-quality hypoallergenic silicone, it delivers excellent durability and resistance to the stresses typical of the underwater environment.

The cap’s differentiated thickness provides an optimal balance between seal and comfort, while allowing easy adaptability to different head shapes. The extremely soft structure and ergonomic shape make it easier to put on and reduce the feeling of compression during extended dives.

The carbon-fiber-effect surface finish not only gives it a technical, refined look, but also preserves the elasticity needed for movement and makes the cap easier to manage in the water. Essential for anyone who regularly practices freediving and spearfishing, both in the pool and at sea.

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 O-Ring for Sealing Floppers - Elasticity and Durability

The C4 O-Ring are sealing rings made from elastic material with a hardness of 50 Shore, specifically designed for Floppers used in spearfishing and freediving. Their elasticity makes them compatible with any type of shaft, while ensuring long service life thanks to the material’s high mechanical strength.

Technical Features

• Elastic material with 50 Shore hardness
• Compatible with different types of Floppers pins
• Innovative integrated tab for easier grip
• Black color for quick identification
• Greater elasticity than the 60 Shore hardness version

Advantages for Underwater Use

The special tab makes the C4 O-Ring easy to grip even while wearing spearfishing gloves, improving practicality during Floppers replacement or maintenance. The superior elasticity compared to harder O-Rings allows better adaptability and excellent sealing, while maintaining adequate resistance over time.

Applications

Designed for installation on freediving Floppers, these O-Rings ensure effective retention of fastening elements, helping keep finning stable and secure thanks to the correct position of the Floppers. The choice of a 50 Shore hardness material provides an optimal balance between flexibility and mechanical strength for continuous use in underwater environments.

C4 Cap for Shaft Protection

The C4 Cap is specifically designed to protect the tips of Shafts used in freediving and spearfishing. Made from durable materials, it provides effective protection against impacts and the risk of damage during transport or storage.

The cap features holes that allow the shooting line to pass through, making it easier to secure or retrieve without the risk of losing the cap. This feature improves ease of use in the water and during equipment assembly or maintenance.

Thanks to its high visibility, the cap is easy to locate, reducing search time and increasing safety when handling the shaft.

Orange Bull C4 Band for Spearfishing Spearguns

The Orange Bull band by C4 is made from premium-grade latex, supplied exclusively by Primeline Industries in fluorescent orange. This latex is produced in layers, ensuring tubing with superior physical and mechanical properties, such as high elasticity and cut resistance, essential for spearfishing and use on spearguns.

Available Versions

• 14 mm with small bore: a highly reactive and progressive band, recommended for large bluewater hunting spearguns
• 16 mm with small bore: increased wall thickness delivering one of the highest power outputs on the market, ideal for both single-band and double-band spearguns
• 16 mm with standard bore: the best balance between loading force and delivered power, perfect for single-band and double-band spearguns

Technical Features and Applications

This band is especially suitable for setting up both classic and roller spearfishing spearguns, adapting effectively to single-band and double-band configurations. The layered latex construction helps maintain shot stability, smooth stretch, and high power with superior long-term durability.

Important Note

PLEASE NOTE: price indicated per centimeter.

Black Bull C4 Carbon Band for Freediving Spearguns

The Black Bull band distributed by C4 Carbon is designed for those looking for a reliable, high-performance component for their spearfishing and freediving speargun. This band stands out for its technical features aimed at advanced underwater use.

Technical Features

• Black color, the least visible underwater when under tension, for better camouflage while spearfishing
• Composite compound with high mechanical strength and excellent elasticity
• Excellent elongation for smooth, controlled power transfer
• Suitable for any type of freediving speargun setup

Usage Guidelines

This band is recommended for freedivers and spearfishers who need a versatile, responsive product capable of delivering consistent, reliable released energy during tracking and shooting.

Please note: the price is calculated per centimeter, allowing a custom purchase based on the speargun’s requirements.