The McDavid Dual Disk Hinged Knee Brace provides two wider, more stable hinges than standard knee braces. Combining the dual disk hinge with a floating pivot point, this innovative brace is better able to accommodate the natural movement of the knee. Moreoever, its neoprene sleeve provides therapeutic heat, while a sewn-on patellar buttress helps with patellar tracking. Features: * Seamless design for better breathability and comfort * Polycentric hinge for better support * Reinforced hinge pockets * Fits right or left knee Warning: Do not apply over open wounds or if you have susceptibility to dermatitis Sizing (measure around knee): Small: 12 - 14 inches Medium: 14 - 15 inches Large: 15 - 17 inches X-Large: 17 - 20 inches XX-Large: 20 - 22 inches McDavid Product Number #422