These exercise balls help improve core stabilization by training the muscles of the spinal column as the body works to stay in balance. Ideal for exercises involving flexion, extension, equilibrium reactions and postural adjustments.  Tested to support up to 550 lbs.  Made of nonslip, latex free, heavy-duty vinyl, these balls deflate slowly if punctured. These balls are for indoor use only and can be used while seated, standing, on the floor or against a wall.

Includes ball with plug, pump, measuring tape, exercise poster and nozzle adapter.