Heating pad for shoulder Could Help: Indications: Shoulder frostbite, strains, sprains, muscle soreness 1. Compressing the shoulder joint to reduce inflammation 2. Reducing shoulder instability to allow injuries to heal more quickly and in the right position 3. Heating and Massaging shoulder elevated to improve blood flow and aid healing Usage method? It is used for AC power supply, such as when a power bank is plugged in,Press and hold for 3 seconds to turn it on or off, press briefly to switch between heat modes, adjust the strap length for a comfortable fit, position the pad on the desired area, avoid prolonged use or falling asleep with the pad on, and clean or store the pad according to the manufacturer's instructions. NOTE: In order to prevent burns, Don't shoulder heating pads directly into the skin. Use a towel, cloth or sheet as an interface between product and your skin