(Sports Design) Kids stay calm and focused while sitting as the seat gives them an outlet for excess energy in the classroom, during meals and at homework time. An attractive, non-zip fun cover surrounds the cushion and can be removed and machine washed. Flexible nubs on one side and smaller bumps on the other, give a choice for just the right amount of tactile stimulation to calm kids. Easy-inflation pump included. Use on chairs, benches or directly on the floor. 13" diameter.