CORE Silicone Bifins

The CORE Silicone Bifins are the must-have training fins for all levels of freedivers. Beginners use them to train the symmetrical foundational bifin technique, while advanced freedivers polish and perfect existing technique. The anatomical design of the foot pocket makes them both comfortable and efficient, while their compact size and soft silicone allow you to travel freely with them.

Anatomical foot pocket
Dedicated right and left foot pockets with arch support keep your foot in the optimal position while finning, preparing you for a seamless transition into performance bifins.

Open-heel design
Open heel foot pockets give you the correct ankle-to-foot position while finning, along with complete range of motion.

Stabilizing blade rails
Eight stabilizing rails on the CORE Silicone Bifins have a specific curvature profile to distribute stiffness, resulting in more efficiency with the least amount of effort.

Soft, yet powerful
While standard silicone swimming fins don’t give you much propulsion while finning, the CORE Silicone Bifins take you further with each kick, making them exceptional for both pool and open water training.

Please note: Bright colors may fade over time when exposed to sunlight. To minimize fading, rinse and store fins away from direct UV light when not in use.

Details and Materials
Hypoallergenic and UV-resistant silicone
Designed for all water temperatures
Can withstand -30°C temperatures without deforming
Arch support maintains correct position of the foot during the kick stroke for maximum efficiency
Open-heel foot pocket provides the optimal foot position for swimming
Anatomical shape of the back strap designed for better fit over the Achilles tendon and offer maximum support
Eight blade rails with specific curvature profile and stiffness distribution similar to the CB2, making them more efficient and stable with the least amount of effort
Molchanovs minimalistic design
Technical specifications
Total Length: 58cm / 22.8in (depending on foot pocket size)
Blade Length: 30cm / 11.8in (from the angle of the blade to the tip)
Blade Width: 20cm / 7.9in
Weight (one pair of fins): 1.6-1.8kg (3.5-4lb)
Colors: Black, Blue, White, Pink, Mint, Purple
◦ Pink bifins are unavailable in size 44-45

Please refer to the Size Chart image.

Care Instructions

All equipment should be rinsed in fresh water after use and placed out of direct sunlight and heat. Do not place heavy objects on top of the bifins and avoid placing bifins near sharp objects.

A 1-year limited warranty applies. Please note that defects or damage to the equipment caused by improper/incorrect use or insufficient/improper maintenance and product care will render our warranty policy null and void.