Never has a calf sleeve made so much of an effect! Fitted with an ergonomic tab called K-protect, this compression apparel reduces vibrations to your knees by 8%! Worn during and after effort, it limits pains and aches, thus delays fatigue and accelerates recovery. Total performance is guaranteed over ultra-long distance races. Over long distances or on steep descents, knees need to be protected against shocks and oscillations.