The Original Backnobber is used by hooking one of its curves over a shoulder or under an arm and using its leverage to apply firm, deep pressure to trigger points in the muscles of the neck, shoulder, upper and lower back and to nearly any other location where trigger points may occur. Such pressure, can significantly reduce tension and pain in muscles and increase range of motion and restore overall function. Useful in providing muscle relief to areas you cannot normally reach in your own, like your back. The Original Backnobber is constructed of durable, fiberglass reinforced Nylon. Colors may vary.