C4 L-1090 Apnea Carbon Fins

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The C4 L-1090 Apnea carbon fins are intended specifically for freediving and feature a hydrodynamic anti-turbulence flap.

Please allow 2 weeks for shipment if the product is out of stock.

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504,22 € Tax included

-75,17 €

Before 579,39 €

Data sheet

General: Sport Multisport
General: Best suited for Freediving
General: Gender Unisex
Footpocket: Angle
Footpocket: Mounting Detachable
Fins: Type Footpocket
Fins: Blade Material Carbon Fiber
Fins: Angle 32°
Fins: Blade Length (Total) 94.00 cm
Fins: Blade Width 19.20 cm
Fins: Recom. depth 0-40 m

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C4 L-1090 Apnea Carbon Fins

Please allow 2 weeks for shipment if the product is out of stock.

The C4 L-1090 Apnea carbon blades are intended specifically for freediving and feature a hydrodynamic anti-turbulence flap. These blades are offered three different hardnesses: 20 (extra soft), 25 (soft) and 30 (medium). The surface finish of the blades is carbon fibre with a white decoration. These blades are best paired with shoes with a black upper and a white sole. 

These blades are specially designed and manufactured with a new progressive lamination of the carbon fiber layers, which is a strict technical requirement for these fins. The lamination combines 4 different types of Japanese carbon fiber, specific for each layer, to optimise the reactivity and resistance of the blades.

The combined use of HT15 carbon externally (exclusive to C4), of intermediate areas with 7 layers of high-strength fabric and a calibrated combination of several unidirectional layers, produces a unique reactivity and an exceptional resistance to stress.

The resistance of these blades has been tested on the C4 robot for over 1.6 million complete cycles and a load three times the one produced by human strength. The specific stratification of the 200 fins has allowed C4 to create extremely resistant blades that allow the spear fishermen who start fishing from shore and who often walk wearing their fins, to be able to do it without any fear of breaking them.

The water rails of the 200 blades are not glued but overmolded on the blades with a specific moulding process that fuses the plastic material with the composite. This innovative production process, which has never been attempted before on composite materials, was conceived by C4 technicians. The plastic polymer used to manufacture the water rails, maintains elasticity four times more over time than normal NBR, the material which is commonly used tom produce the glued water rails. The overmoulding process is an industrial process, perfectly replicated, which avoids any separation that can occur on glued water rails.

The over moulding process has allowed us to create a progressive design of the water rails. The first portion close to the foot features a design ideal for protecting the blade without overloading it with water and without limiting its elasticity. Progressively, the height of the water rails increases becoming an effective guide for the fluid threads, thus preventing load drops and unwanted skidding.

When selecting the hardness, please take into account the recommendations of the manufacturer:

RECOMMENDED HARDNESS OF THE C4 CARBON BLADES

Weight/Height

Poor fitness

Average fitness

Good fitness

up to 55 kg / up to 1.50 m 25 25 25
55-65 kg / up to 1.50-1.65 m 25 25 25
65-75 kg / up to 1.65-1.75 m 25 25/30 30
75-85 kg 25 25/30 30/40
over 85 kg 30 30 30/40

Technical characteristics:

  • Material: carbon HT15 Carbon look
  • Blade length: 940 mm
  • Blade width: 192 mm
  • Angle: 32° (29° blade + 3° footpocket)
  • Hardness: 20 (Extra Soft), 25 (Soft), 30 (Medium)
  • Recommended depth: 0-40 m
  • Recommended technique: open water and pool freediving

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C4 L-1090 Apnea Carbon Fins

C4 L-1090 Apnea Carbon Fins

The C4 L-1090 Apnea carbon fins are intended specifically for freediving and feature a hydrodynamic anti-turbulence flap.

Please allow 2 weeks for shipment if the product is out of stock.