Classwork, drawing, eating and playing are no longer sedentary activities. A patented anti-roll safety ring on the gently-rounded base prevents tip-overs and falls. Ideal for children with ADD or ADHD by providing an outlet for restlessness. Seat: 14”H, 11”W Base: 13 3/5” W. Manufactured with Antimicrobial Protection. Manufacturer Lifetime Warranty.