The answer to back, shoulder, and neck pain! An effective ergonomic and preventive product that addresses the problems associated with occupations and hobbies that require one to work for a prolonged period of time with the hands extended in front of the body. The unit is made with a 1 pound weight that comes off easily should you only need a 2 pound counterbalance. User proven pain relief promotes good posture. Scientifically tested and proven comfortable, adjustable shoulder straps, and 1 size fits all.