Fidget to your heart’s content with this air-filled seat cushion. Place Wobble Cushions on classroom or office chairs to help to strengthen core and back muscles while improving concentration and focus, or set it on the ground to work on balance. Perfect for both adults and children, this wobble cushion includes a two-sided sensory surface as well as a pump for easy inflating.• Set includes 13” wobble cushion and pump for inflating• Two-sided textured surface for sensorimotor training and preference