Workt Knee Compression Support Sleeve for Crossfit, Weightlifting, Powerlifting, Exercise & Sports - Designed by Elite Crossfit Athlete Chris Spealler - For Men & Women, 5mm Neoprene (1 Sleeve) Developed and endorsed by Elite Crossfit Pro Chris Spealler - Rigorously tested in the gym and lab for optimal effectiveness Available in 5mm & 7mm - Extra-small, Small, Medium, Large & Extra-Large sizes Industrial grade neoprene - Heavy-duty stitching - Unique single-piece design Four great colors to choose from: Blue, Green, Pink & Red - Made in the U.S.A. Unique single-piece design ensures maximum compression & stability - Increases blood flow, reduces inflammation - Provides support and comfort for existing pain or injuries