About this item:
Balance cushion provides an unstable surface to exercise on, requiring you to use more muscles to stay balanced. Used as a wiggle seat to provide sensory input, and to help calm children that have a hard time sitting still. Ergonomic seating relieves back pain and shoulder aches. Ships inflated, includes a pump for adjustments. Stability disc size: 13 inches / 33 cm diameter. Included components: disc, hand pump, exercise instructions.