High strength, patented triaxial hinges allow unrestricted, natural knee movement. Adjustable straps provide controlled compression for custom fit. Removable patella buttress stabilizes and helps protect the kneecap and can be cut to desired shape for proper tracking and positioning. Extra-long for maximum stability and protection. Extension stops at 10°, 20° and 30° for limited range of motion if used as a rehab brace (tool kit included). Fully-trimmed edges with smooth seams help prevent irritation and chafing. No bunching with open back design.