Features include: Can be used with interchangeable single handle for partner drills available separately Maximises an athletes accelerating speed and can be used for specific training drills The HD Sprint is the ideal training tool for those whom acceleration is crucial Maximises an athlete\'s first 20ft when accelerating Three Levels available Develop explosive power, increase your acceleration speed and reach your goals with HD Sprint. Ideal for developing acceleration over short distance, small bursts of extreme power and specific training drills. Offering varying levels of resistance, the 10ft covered elastic tube with quick-to-fit shoulder harness allows athletes to create rapid acceleration exercises and explosive drills. Can be fixed to either an anchor or controlled by a partner.