Jump Sole (medium Size 8-10) - Jumpsole - Shoes with a Platform to Increase Your Vertical Leap. Builds fast-twitch muscle fiber in the lower leg. Includes DVD and Training Manual.Including Football, Basketball, soccer, hockey. Used by the Pros and Pro Teams! 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, Jumpsoles are guaranteed to boost your vertical jump 5 - 10 inches. The item "Jump Sole (medium Size 8-10) Jumpsole Shoes with a Platform to Increase Your" is in sale since Sunday, January 22, 2017. This item is in the category "Sporting Goods\Team Sports\Basketball\Training Aids". The seller is "mattdhorstman" and is located in Lawrenceville, Georgia. This item can be shipped to United States.