The Fit Disc can withstand up to 350 lbs. It promotes core stability and has many of the same benefits of a gym ball while performing lower back and abdominal exercises.
Can be used in most chairs, too. Support and challenge the spinal muscles while enhancing posture. For children with hyperactive nervous systems - enhances calmness and concentration. Can be used on the floor for exercises to: Improve balance and increase strength. Inflatable with a standard ball needle and pump.