How Does the Rocket Overspeed Trainer Work?
The 30' Lightning Cord stretches up to 40 yards for maximum overspeed training. Attach the 30' Lightning Cord to your adjustable Speedster Harness and develop faster leg repetition and a longer stride. Overspeed Training trains the muscles to move at a greater rate of motion. Each time this training is repeated muscle memory is developed. MADE IN THE USA!