An attractive machine washable cover surrounds the classic wiggle Seat. Kids stay calm and focused while sitting on this sensory cushion as the movement that the seat allows gives them an outlet for excess energy in the classroom, during meals and at homework time. It is effective on a chair, bench, directly on the floors and even outside. 13”/33cm diameter is a great fit for a kid’s seating while being large enough to grow as the child does. Comes inflated and includes easy-inflation pump.