This lightweight support provides firm, comfortable compression and maintains a full range of movement for weak, injured, or arthritic knees. Four patented straps allow for adjustable tension to provide a custom fit. The soft neoprene blend retains body heat for soothing warmth to help relieve pain and keep your knee flexible to avoid reinjury. Comfortable fit for all-day wear. Open patella helps stabilize the kneecap Patented tension straps provide a custom fit for controlled compression Contour design minimizes bunching behind the knee Fully trimmed edges with smooth seams prevents chafing Padded protection with a double layer at knee Fits knee circumference up to 20 in. (50cm).