Feature - Simple knee sleeve - Improves heat retention to promote healing - Closed patella area for maximum heat effect Applications - Relief from arthritis - Swelling - Mild stains - Sprains SIZE : Measure the circumference of the knee S 121/2 - 14 (inch) 31.8 - 35.6 (cm) M 133/4 - 143/4 (inch) 34.9 - 37.5 (cm) L 141/2 - 161/4 (inch) 36.8 - 41.3 (cm) XL 16 - 171/2 (inch) 40.6 - 44.5 (cm) What's in the Box : 1piece x Classic Knee Support