Sling Shot - w Harness or Belt - Rubber/Bunji Resistance Training Sporting Goods-24' stretches to 72'
Overspeed improves stride rate and length, arm swing & acceleration by pulling the athlete at a faster than normal top speed pace. Attach the 24' cord to a secure object or teammate's waist with the snaplink connectors. Attach the other end to your harness or waist belt. Stretch the bunji no more than 2 1/2 times it's normal length, then start running forward.