For mild ligament sprains, strains, Osgood Schlatter or patellar instabilities. Ideal Application Recommended for mild or moderate ligament joint pain, sprains, strains, Osgood Schlatter disease or patellar instabilities. Key Features Compressive neoprene support. Thigh and calf straps provide additional support and compression. Sewn-in pad for additional patellar support. Medial/Lateral spiral stays. Size Chart & Fit Help Sizing Take the measurement of your thigh and calf 6" above and below your kneecap using a flexible type tape measure. Use the measurement you take here to choose your size. Size Thigh Knee Center Calf S 15 1/2" - 18 1/2" 13"-14" 12"-14" M 18 1/2"- 21" 14"-15" 14"-16" L 21"- 23 1/2" 15"-17" 16"-18" XL 23 1/2" - 26 1/2" 17"-19" 18"-20" XXL 26 1/2" - 29 1/2" 19"-21" 20"-22"