Copper Compression Recovery Knee Sleeve - Medium, Black - Knee Support/Strength. (1 sleeve)Copper Compression Recovery Knee Sleeve - High Copper Content with Infused Fit. Best Copper Knee Brace for Men and Women. Wear to Support Stiff + Sore Muscles + JointsCopper Compression Knee Sleeves provide youthe ultimate in knee support.This sleeve supports stiff and sore muscles while allowing you to retain full range of motion!88% Copper Nylon12% Spandex