Gym Ball Gymball Chair with back support for Office and Home Exercise. This Gym Ball Chair on wheels provides all the benefits of sitting on a Gym Ball with the mobility and stability of an office chair. Back support can be removed in 30 sec allowing you to use the chair for exercises. The Gym Ball Chair makes it tougher to slouch. It encourages a slight bouncing movement that keeps leg muscles active and eases stress. Anyone at your office complaining about back pain??? This inflatable Gym Ball Chair will solve this problem!