There are times that you need overspeed training, but don't have enough athletes to operate a Rocket Rope. In such cases, the Speed Builder is the perfect choice. The Speed Builder can be used by two athletes to perform tow sprints, or can be secured to a goalpost for solo overspeed training. This proven training tool is still the simplest way to apply assistance to an athlete's sprint.

• 20 ft. (6.67 yards) flexicord safely stretches to 60 ft (20 yards)
• Sheathing protects flexicord from nicks and scrapes, and prevents stretching past 60 ft (20 yards)
• Includes two hand-sewn, fully adjustable waist belts