Improve your performance on the track with a pair of PowerMax(R) Ankle Flex Straps. Developed by sprinting coach Willie Williams, these straps promote proper technique. The Ankle Flex Straps hold the feet in the flexed position to improve ground strike efficiency and reduce leg resistance. With the PowerMax(R) Ankle Flex Straps, you'll reach speeds you never thought possible. FEATURES: Ankle flex straps for better sprinting performance Improve ground strike and lower leg resistance Sold in pairs Manufacturer's warranty: one year Model: TA1485 For additional information relating to the Manufacturer's Warranty, please contact 217-367-8438.