C4 Carbon - 0.5 mm Open Heel Socks Accessory size:S A smaller strap can become

A smaller strap can become limiting as soon as the lanyard is used around the ankle

convenience

Avoid thick socks unless you intentionally need to reduce extra space inside the foot pocket

Adjustable angle

This significantly decreases the friction due to the angle of the rope against the pulley

C4 Carbon - 0.5 mm Open Heel Socks Accessory size:S A smaller strap can becomeC4 Carbon 0. 5 mm Open Heel Socks The C4 Carbon 0. 5 mm Open Heel Socks are ultra thin neoprene socks designed for freediving foot pockets. They add a light protective layer between your foot and the fin without significantly changing the fit. Use them when your fins already fit well, but you want less rubbing, fewer pressure points and more comfort during pool training, depth sessions or long open water dives. The 0. 5 mm thickness is the key point: