Jumpsoles can be strapped on all regular sportshoes. With every step your calf muscles are trained much more effectively as with normal shoes. Through consistent plyometric training and proper usage you can increase your vertical leap by 15 to 30 centimetres. Jumpsoles also stretch and strengthen your achilles tendon and calf muscles. For explosive leg strength it is essential to develop flexibility in this area. Soon you will be able to run faster, jump higher and perform quicker cuts than ever before.