FLEXTEND® / RESTORE™ AC-Kit attaches to the glove, allowing the user to perform more than 50 upper extremity exercises for the chest, back, biceps, triceps, shoulders and more. The AC-Kit comes with a printable PDF CD manual and includes exercise programs for a variety of shoulder and postural disorders. This system is perfect for those with shoulder injuries, including shoulder impingement, rotator cuff disorders and Thoracic Outlet Syndrome.