Back Pain Relief & Posture Supporting BackJoy™. The revolutionary and scientific design of BackJoy's Orthotic Cradling System™ allows BackJoy Relief to 'float' the user's spinal system over any sitting surface, hard or soft, for all-day comfort and injury prevention.
Power Systems Exercise Ball Chair Ergonomic seating system combines the core strengthening benefits of the stability ball and the convenience of a rolling base into the Ball Chair. This attactive chair promotes active sitting while strengthening the back. It can be used without the back rest