New SKLZ HOPZ Vertical Jump Trainer strengthen jumping muscles College NFHS Approved and Ships Fully

NFHS Approved and Ships Fully inflated

All While Keeping It Piping Hot Or Ice Cold And Fitting Comfortable And Conveniently In Your Hand Or Your Vehicles' Cup Holders

Fits under any Sports Helmet

Micro adjustable windage and elevation

Rubber connection piece is a bit torn

New SKLZ HOPZ Vertical Jump Trainer strengthen jumping muscles College NFHS Approved and Ships FullyStrap on to build explosive leg power and strengthen jumping muscles Move resistance cables on belt to target specific muscles Change resistance cable quickly with patented Slide Lock on belt and ankle straps Adjustable belt with side padding fits better and helps with proper cable placement Durable cables and ankle straps with built in shoe harness keeps straps in place