PER4M Vertical Jump Trainer Color:Default Title as well as a heavy-duty

as well as a heavy-duty door attachment that allows you to get in a comprehensive full body strength training workout at home or on-the-go

this model is 13" long to be perfect for travel

functional training increases strength

portable option for travel

and stability

PER4M Vertical Jump Trainer Color:Default Title as well as a heavy-dutyPerfect 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