The Original Backnobber®II is constructed of durable, fiberglass reinforced Nylon and carries a full, satisfaction guarantee. The Original Backnobber®II 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. Click here to print or download a pdf of the Backnobber II USer Guide.