Provides support for weak shoulder muscles and strained tendons or ligaments. Fabricated from lightweight elastic material, humeral cuff and straps help prevent subluxation by dynamically supporting the structures that hold the humerus in place. Also assist in positioning the scapula in retraction while limiting shoulder rotation and abduction. Designed to be easily donned and doffed and worn under clothing. Hand wash, air dry. For size, measure circumference of upper arm at the point midway between elbow and shoulder.