Product details:

Optimizes an athletes' ability to hit a ball harder, longer, and straighter as well as throw a ball faster, further, and more accurately. Hitters are experiencing gains in power, exit velocities, hand speed, plate coverage, and swing efficiencies.FAST PERFORMANCE RESULTS. Within 3 weeks or less. Enables proper body movement by optimizes one's KCR which allows greater productivity on the field WHILE ENHANCING SAFETY FOR THE PLAYER.Optimize Performance AND SafetyProduct deployed by 6 MLB Orgs, 50 NCAA baseball programs, 6 NCAA Softball programs.EASY TO USE. One Size Fits All. Strap up, step in, and clip on. 1-2-3!!! The VL Harness is from 20" to 42" pant waist sizes. Foot straps are universal fits. The bungees will stretch out to 41".