The Doubleman Overspeed trainer is a two person overspeed training device. Individuals are attached together with 20' safety sleeve tubing attached to two swivel belts or one swivel belt and one shoulder harness.
By attaching the Doubleman Overspeed to two runners you can overspeed the runner in back. The back runner allows the front runner to stretch the elastic up to 3 times its length. This then allows the back runner to be pulled forward with the help of the 20' safety sleeve elastic tubing. The safety sleeve elastic tubing makes the product safe and comfortable. It's a terrific assistance device to train your nervous system to run faster and increase stride length and frequency, while still allowing you to maintain relaxation.
Doubleman Overspeed Operation: