Knee support with polycentric hinging. Made of latex-free neoprene with outer nylon cover. Padded buttress relieves patella pressure. Top and bottom hook and loop closures. Fits left or right knee. Variety of sizes available. Go beyond your standard hinged brace with the McDavid Dual Disk Hinged Knee Support. The polycentric hinged design, with wider hinge paddles than most, gives you the best in prevention and recovery from MCL and ACL injuries. Top and bottom hook and loop closures ensure a comfy fit, not to mention the seamless, perforated back panel and padded buttress around the patella. The support is built tough out of latex-free neoprene with an outer nylon cover, complete with bound edges to prevent irritation. The design fits both right and left knees, and it's available in your choice of sizes. Sizes: Small: 12-14 inches around knee Medium: 14-15 inches around knee Large: 15-17 inches around knee Extra-large: 17-20 inches around knee Extra-extra-large: 20-22 inches around knee About McDavid Inc. With a passion for maximizing athletic performance while preventing injury, McDavid Inc. markets and designs apparel for sports medicine and protection. The company was founded in 1980, but traces its roots to 1969, when Dr. Robert F. McDavid created an innovative knee brace for football. Today, McDavid dominates the industry with its research-backed braces, supports, wraps, and more, and is headquartered in Chicago with growing distribution subsidiaries in Japan and Europe. From training onward, McDavid aims to be a vital part of every athlete's success. Size: Small.