ProCare Knee Brace Medium D-Ring / Hook and Loop Strap Closure 18 to 52 cm Thigh Circumference Left or - EachAbout Procare Hinged Knee Brace, Medium (1 Unit) 1 8 inch universal buttress Buttress may be adjusted to allow for medial, lateral, inferior, or superior patella stabilization Sturdy removable dual straps provide mild support to medial lateral ligaments Take measurement at 6 inches above mid patella: Medium fits 18 20 1 2 inch circumference Description: Knee Brace ProCare Medium D Ring Hook and Loop Strap Closure 18 to 20 1 2 Inch Thigh Circumference