Original Backnobber Size:Royal Blue RB3905RB providing intermittent pneumatic compression for providing intermittent pneumatic compression for 3x faster edema reduction The black marks can also be used by clinicians to clearly communicate goals and limits so patients know how far to go and where to stop This hand crafted deep muscle massage tool provides a way for people to manage chronic muscular pain both on their own and in conjunction with professional medical treatment and therapy Designed to be hooked over or under the shoulder so that one of the two ends can be pressed into any of the muscles of the upper or lower back or neck