PER4M Vertical Jump Trainer Color:Default Title helping you burn calories and

helping you burn calories and build muscle

and stability

giving you balance and durability unmatched in the industry

this gym equipment is robust

PER4M Vertical Jump Trainer Color:Default Title helping you burn calories andPerfect for basketball, volleyball, track & field and all manner of athletic and resistance training, this tool maximizes your vertical and horizontal explosiveness by strengthening quads, hips and glutesthe muscles that contribute most to jumping and vertical leap. Increase lower body dynamic strength as a result of adding intensity and consistent positive and negative resistance to jumping, squatting and all manner of lower body drills and