Per4m Jump Trainer increases both vertical and horizontal leaping ability. Increase lower body dynamic strength by adding resistance to drills and training workouts Padded adjustable belt and ankle straps fit most sizes Quick release power tubes are easily added and removedDurable latex tube construction 10 different drill cards for training and practicing BENEFITS Develop powerful vertical jump capability Strengthen lower body muscles for maximum spring Use during Plyo-training to improve muscle contraction SPECIFICATION: Brand Jordan Usage Home Use, Commercial Use Condition Brand New Warranty 12 months