Shoulder injuries happen! Here are some of the main shoulder injuries that can occur, Rotator Cuff Strain, Frozen Shoulder and AC Joint Injury. These painful injuries happen from over use of shoulder, not using your shoulder and over use. The common theme between all these injuries is stiff shoulder and pain that ca hinder your way of life. The Stinger is the perfect solution for all of these and many more. The ice therapy pushes out all the bad stuff your body doesn't. Massage loosens up the muscle. When the muscle is relaxed and rewarms the blood flow increases to the area. Aiding the body in it's natural recovery method.