Builds fast-twitch muscle fiber in the lower leg. Jumpsoles are the world's most popular tool for increasing your vertical jump. Jumpsoles are plyometric platforms that attach to your shoes.
Jumpsoles focus your body weight onto your calves and train you to spring off the balls of your feet like a powerful cat. By doing the special plyometric exercises in the video you develop fast twitch muscle fibers in your legs for explosive leaping.
Used by slam dunk contest winners and top pro & college teams. The item "Jump Sole (MEDIUM Sz 8-10 mens size) -Increase Your Vertical Leap! NEW" is in sale since Thursday, July 18, 2013. This item is in the category "Sporting Goods\Team Sports\Basketball\Training Aids". The seller is "wwwkytecus" and is located in Minneapolis, Minnesota.This item can be shipped worldwide.