Specially designed to fit around the shoulders and neck the Shoulder Pad provides up to two hours of heat before gradually cooling down. The Pleasure Pad can also be supplied with a cloth pouch retaining heat for longer whilst enabling the pad to strapped to specific areas of the body without constricting mobility. The most common cause of shoulder pain and neck pain is injury to the soft tissues including the muscles tendons and ligaments within these structures. This can occur from whiplash or other injury to these areas. Degenerative arthritis of the spine in the neck (cervical spine) can pinch nerves that can cause both neck pain and shoulder pain. Degenerative disc disease in the neck (cervical spondylosis) can cause local neck pain. When used on the neck and shoulder this pad stimulates the blood circulation to the brain making it an excellent source of relief for: Neck tension. Upper back stiffness. Headaches (including migraines). Chest and stomach pains. The relaxing and soothing heat coming from this pad is also an excellent source of relief of stress. Features Color - Pink. Material - Pvc Sodium. Dimension - 11.8 x 18.5 x 0.5 in.