For those experiencing pain and limited mobility in the shoulders, the Incrediwear Shoulder Brace relieves pain and accelerates recovery for acute or chronic shoulder injuries. The Shoulder Brace can be worn during and after activity to provide pain relief and post-activity recovery without restricting mobility.SIZING: Measure circumference of the bicep. (Package contains one brace and can be used for right or left shoulder). SMALL9-11 inches/23-28 cmMEDIUM11-13 inches/28-33 cmLARGE13-15 inches/33-38 cmX-LARGE15-18 inches/38-46 cmFor best results, wear the Shoulder Brace to alleviate symptoms associated with:ArthritisRotator Cuff injuriesTendonitisFrozen ShoulderIncrediwear Shoulder Brace Supports are infused with circulation enhancing natural elements germanium & carbonized bamboo. These elements are activated by your body heat & dramatically increase blood flow by releasing negative ions. These anions are absorbed by the body's cells, causing them to vibrate and thus stimulate circulation.