It can help tighten or relax muscles when you do exercise. Such as basketball, tennis, golf, weightlifting, etc. Tendinitis,Rotator Cuff,Shoulder,Arthritis,Frozen Shoulder,Labrum Tear,Shoulder Support,Dislocated Ac Joint,Shoulder Brace,SwellingTendinitis,Rotator Cuff,Shoulder,Arthritis,Frozen Shoulder,Labrum Tear,Shoulder Support,Disl….