![CanDo® Ball Stool - Plastic - Mobile - No Back - Adult Size - with 20" Ball](http://shop.starpt.com/cdn/shop/products/30-1796_{width}x.jpg?v=1635538397)
Versatile exercise ball chair holds a 50 cm ball (included) securely in place. Use as a chair without back, or use as an inflatable exercise dome. Casters have locking mechanism to make chair stationary. Lock casters when using during vestibular exercises.