Orthopedic surgeons, rheumatologists, podiatrists, family-practice physicians, physical therapists and their patients, professional athletes, and active individuals have praised our Knee Strap. Why? Shortly after initial usage, it provides many individuals with a marked reduction in the pain and discomfort caused by various knee disorders -- chondromalacia patella, Osgood Schlatter’s Disease, runner’s and jumper’s knee, some forms of arthritis, and knee degeneration -- while, at the same time, allows them to return to their normal activities with increased mobility. Measuring Instructions:Measure Circumference Below Patella (kneecap). Original Knee Strap can be worn on either knee, right or left. Note: If you are between sizes, we suggest you order the smaller size. Improves Tracking Guides knee cap in groove Reduces displacement & pain Original Patented Design Spreads pressure uniformly SoftActionTM fabric provides lasting comfort Range of sizes for perfect fit and superior results Want immediate relief? Cho-Pat® products provide unprecedented support to deliver immediate relief. The Cho-Pat® Original Knee Strap provides immediate relief from Runner’s Knee Osgood Schlatters