Do your kids have anxiety or sensory issues? This seat is great for sitting and concentrating at dinner or in school. 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. It allows students and adults to silently move while working, improving concentration. Flexible nubs on one side and smaller bumps on the other give a choice for just the right amount of calming tactile stimulation. 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 pump.