Size (upper-lower): Small (10 3/16"-8 3/4"), Medium (11 3/8" - 9 3/4"), Large (12 5/8"-11"), XL (13 3/4"- 12 3/16"); stretches 4"-4.5"; length 9 3/4"

Titanium Knee Support helps ease the tension in sore muscles and joints of the knee.