The short arena unisex training fin Powerfin Pro is ideal for competition swimmers. It is used for strength training and the improvement of leg work. Thanks to the inclined upper side and the hydrodynamic channels it allows a faster leg stroke and better control and stability. The open heel strap ensures maximum ankle flexibility for a faster up kick and a more powerful down kick. The left and right fins have different ergonomic shapes. The soft silicone material ensures maximum wearing comfort. PVC free.