cable ties
lifeline usa r4 vertical jumper with two 40 lb resistance cables
ul li significantly increases vertical jump li li improves power and agility li li full body version that works your core and back li li includes 6 12 inch cables an adjustable belt 2 foot stirrups and instructional brochure li ul br the lifeline vertical jumper is designed for those serious about towering over their competition . it works the same way the portable power jumper does only it doesnt resist the upper body and spine . we recommend the vertical jumper for people who have had any back or neck injury because it isolates your lower body . br ul
lifeline usa