Jump & Speed Training System 5.0 helps build up muscle fibers in your lower leg, increasing your vertical jump and speed. These frontal training platforms easily strap on to the front of your shoes. Includes training manual, and training video.The item "JumpSoles Plyometric Training Platforms Medium 8-10.5" is in sale since Wednesday, March 18, 2020. This item is in the category "Sporting Goods\Team Sports\Basketball\Training Aids". The seller is "dandjretailassociates" and is located in Montgomery, Alabama. This item can be shipped to United States.