HELPS MAINTAIN NATURAL MOVEMENT SHOULDER PAIN RELIEF: a unique design that guides and centers the arm in the socket so the shoulder maintains proper natural movement without impacting mobility. The support is easy to put on and take off thanks to its high elasticity, and it is secured to your upper body with a soft strap. HELPS RELIEVE PAIN DISCOMFORT: The full pain-relieving effect of the support is produced during movement. As you move, the support activates the muscles and gives an intermittent massage on the soft tissues. Used to help treat prevent: shoulder arthritis, pain, instability, swelling, tendonitis and other shoulder stability issues. SPECIAL ENGINEERED FABRIC: knitted fabric is soft, breathable and moisture-wicking. The Perfect Fit sizing system goes beyond small, medium and large for a comfortable fit that stays in place all day with the proper amount of compression. Feature 1 : Feature 1 : Comfortable Fit - The soft knit fabric delivers the ultimate in comfort. It is also machine washable in the gentle cycle, which helps maintain its elasticity and original fit. Feature 2 : Feature 2 : Rotator cuff injuries or rehabilitation. Mild dislocations/subluxation (grade I/II). Tendonitis. Recovery following arthroscopic surgery. Arthritis. Hemiparesis. Nerve palsy. Post-traumatic and postoperative pain. Feature 3 : Feature 3 : Full Range of Motion - OmoTrain supports you during movements such as lifting of the arm. Your chest and back areas are left free, so the support is particularly comfortable to wear. Feature 4 : Feature 4 : Measure the circumference of the upper arm, hanging loosely, approximately 6 inches above the elbow. (See Images for sizing chart)