Floor Seating - For some students sitting low to the ground is the most comfortable and effective learning environment. Focus Enhancer - For many active children that have a difficult time sitting still, the movement the ball top provides, can give them the input they crave, thereby Increasing concentration. Exercise, and Rehabilitation - The dome can also be used as a mini balance trainer, and muscle strengthener. It can be used with the dome side up, or down. Durable and Safe - Rubber feet keep the seat stable. The robust dome can hold up to 400LBs, and features a matte textured surface to ensure user safety. Lightweight - The product weighs less than 7 LBs, making it easy for children to move from place to place.