Vertical Jump Trainer Bounce Training Device Leg Strength Training Bands For Agility Features: Resistance rope latex tube, strong rebound, resistance, to prevent collapse, enhance the bounce Soft latex material, comfortable, convenient, and safe to use.Adjustable belt and ankle straps to fit most people From a biomechanical point of view to improve the leg strength to do anything you can do to achieve the squat action or participate in any sport, for enhancing the jump, Speed and strength are very helpful with rubber foot ring/ring is the adjustable wrist, snap department can add more elastic rope to increase resistance This jumping coach increases muscle balance, vertical and horizontal jumping ability It can also improve posture and prevent injuries Helps you to perform better at any sport Specifications: Color: Black Vertical Elasticity (Tubes): 54 - 70 Cm Bandage Size: Up to 16cm Waist Size: Up to 49cm Package Include: 4 x Latex Tube 2 x Bandage 1 x Belt 1 x Manuel 1 x