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. 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! Package Dimensions: 15.3 x 8.8 x 5.1 inches. And we will work with you to resolve it to your satisfaction. The item "Jump Sole (medium Size 8-10) Jumpsole Shoes with a Platform to Increase -NEW" is in sale since Wednesday, June 14, 2017. This item is in the category "Sporting Goods\Team Sports\Basketball\Training Aids". The seller is "platinumlifestyles101" and is located in US. This item can be shipped to United States.