Material: Polyester, Sponge, Nylon Size: Small:Shoulder width:12.5”-14”,Biceps girth:7.1”-8.3” Medium:Shoulder width:14”-15”,Biceps girth:8.3”-9.4” Large:Shoulder width:15”-16”,Biceps girth:9.4”-11” X-Large:Shoulder width:16”-17”,Biceps girth:11”-12.6” XX-Large:Shoulder width:17”-18.5”,Biceps girth:12.6”-14.2” Kuangmi Double Shoulder Support can directly oppress the shoulder and help reduce the shoulder pain and sprain. ①Relieve pain caused by shoulder pulls or strains ②Provide protection and support for both shoulders ③Functionally stabilize, assist or restrict movement according to the specific needs of shoulders ④Controlled assistance or restraint following the natural movement of the muscles and joints -The combination of heat-retention and compression helps alleviate some of the pain and discomfort for those suffering from tendonitis or arthritis in the shoulders. -Compression lining increase the warmth and comfortable -Ideal for use during work and other physical activities.Great use in sports like football, basketball, volleyball, tennis, wrestling, bowling -Please note:This product is no intended to be used as a brace or posture corrector.It is not medical supplies,but if you are not injured it can help you avoid being hurt.If you have been injured,then it can help you fixed the shoulders,avoid secondary hurt,help reduce pain -When wearing, please fix your arms first and then adjust your shoulders -The shoulder support is washable.Washing instruction:Hand wash at room temperature,soaks the ankle support with soap, then rub and wash, dry it in the shade.