squatLIFTS / wodLIFTS, Add Heel Height, Increase Squat Depth, Perform Better Increase squat depth without limiting athletic performance Adds 1/2 Inch of heel height to any training shoe by placing under insole Perfect for workouts that include Squats, Snatches, Cleans, Squats, Wall Balls, Pistols etc Designed for weightlifting - extremely stable / do not compress Sizing: Small (M &lt; 7.5 / W &lt; 9) | Medium (M 8-10.5 / W 9.5-12) | Large ( M 11+ | W 12.5+)