The Sully Shoulder Brace provides shoulder immobilization and controlled range of motion for anterior, multi-directional, inferior and posterior instabilities, rotator cuff deceleration, shoulder separations and muscle strains. The shoulder brace is designed to stabilize, assist or restrict movement of the shoulder post-injury and post operatively. The brace pulls the humerus posteriorly as it restricts external rotation and abduction. It has elastic straps attach with Velcro at any point, in any direction and with any amount of force. The smooth, controlled assistance or restraint follows the natural movement of muscles and joints.