The RX Knee Sleeve 5mm by Rehband, our most popular knee sleeve, is a medium knee support that provides warmth, compression and flexibility. It is ideal for a variety of sports and workouts that require support and mobility such as weightlifting, functional fitness, and High Intensity Interval Training (HIIT) or for athletes wanting more support without sacrificing flexibility. FEATURES Patented anatomical design 4-panel construction 5mm thick SBR/Neoprene Fits right or left knee Available in a variety of colors BENEFITS Designed to move with you while providing support, warmth and compression. Improves muscle coordination and control Fits great and stays in place while you workout Provides warmth and compression while still allowing freedom of movement Protects the knee and skin against abrasions Soft fabric like feel with exceptional durability Want more support? Check out the RX Knee Sleeve 7mm and Power Max Want less support? Check out the RX Knee Sleeve 3mm