Sizing: Measure directly below knee. One Size: 10 to 22 inch, 25 to 56 centimeters. Antimicrobial (Antimicrobial treatment inhibits growth of bacteria on the brace. The antimicrobial treatment is intended to protect the brace and does not extend protection to the skin). Helps relieve knee pain from Chondromalacia, Patellar Tendonitis, Osgood-Schlatter's disease. Fits left or right knee. This adjustable strap is designed to improve patellar tracking and elevation by applying mild pressure on the tendon...