--FUNCTION: shoulder brace prevent shoulder and back from injury and sprain during strenuous movement,Preventing the dislocation of shoulder joint and sprain,provide compression,support and heat retention,help keeping muscles and joints flexible,reduce muscle tremors and soft tissue injuries,Provide suitable pressure and balanced support to shoulder to avoid the distortion of shoulder.--There are 2 detachable adjustable Hook tape straps,strengthen the sense of restraint,help reduce the shoulder pain and sprain,provide support,protection from cold and humidity to shoulders,upper arms and neck area.--FEATURE:Soft/Comfortable/Breathable/Skin-touch/Sports protection/Back support/Shoulder stabilization.SUITABLE CROWD:Basketball,Volleyball,Football,Soccer,Tennis,Weightlifting,Wrestling,Running,Jogging,during work and other physical activities.-- COMFORTABLE WEAR: Shoulder wraps to prevent injuries during workout, physical activities, and playing sports but can also be used to stabilize the movement while sleeping.It can be worn under ordinary or loose clothes also can be worn on underwear or a T-shirt.--SIZE: when wearing, please fix your arms first and then adjust your shoulders.S: Shoulder width (cm): 26-39, weight (weight): 90-120 poundsM: Shoulder width (cm): 40-45, weight (weight): 120-150 poundsL: Shoulder width (cm): 46-51, weight (weight): 125-190 pounds--TIP: If you are very thin,please select a smaller size, in the opposite, please select a larger size.