The Cho-Pat Original Knee Strap provides relief for Runner's Knee, Osgood Schlatter's and Chondromalacia and dynamically supports the knee as it bends and straightens. Applying appropriate pressure on the tendon below the kneecap, the Original Knee Strap helps guide the kneecap in the groove, improving tracking and assisting in spreading pressure uniformly over the surface area. The Original Knee Strap is available in a range of sizes to ensure a better fit and maximum performance. Available in black and tan. For sizing measure the circumference below patella (kneecap). If you are between sizes, we suggest you order the smaller size.