This is what you need if you're trying to increase your vertical leap. This equipment made me being a 5'10 white boy able to dunk a basketball on a 10' goal. To me that was crazy.But this isn't just for basketball this is for anyone who's trying to increase their vertical. The item "Jump USA Squat-Flex Vertical Workout" is in sale since Wednesday, May 18, 2016. This item is in the category "Sporting Goods\Team Sports\Basketball\Training Aids". The seller is "jordador4" and is located in Swansboro, North Carolina. This item can be shipped to United States.