The COREFX Slingshot Over speed Trainer represents the culmination of many years of sports conditioning research and development. The Slingshot Over speed Trainer helps athletes to dramatically enhance speed through use of over speed training. This COREFX product is perfect for sports conditioning, personal training and boot camp workouts. Athletes can use the Slingshot Over speed Trainer individually or with a training partner/coach. If training by yourself, attach one end of the COREFX Slingshot Over speed Trainer resistance tubing to a secure object and the other to your waist belt. Beginners should start by stretching the resistance tubing out to approximately 30-Feet until they develop an appreciation for the whip-action effect. Explode forward as you allow the COREFX Slingshot Over speed Trainer to push your velocity beyond your top speed. Training with a partner or personal trainer follows the same setup, except one end of the resistance tubing will be attached to your waist belt and the other to your partner’s waist belt. As you brace yourself, either back pedal or have your training partner jog forward to build tension on the resistance tubing. Once the desired tension is reached, use the tension to propel you forward, building momentum at a rapid pace, have your personal trainer watch your movement while rapidly pulling the resistance tubing clear of your running path.