This height adjustable Active Sitting chair is the perfect seating solution for the teen student at home or the dorm-bound college student. The gently-rounded bottom allows your body to keep moving while your mind stays focused and on task. Ideal for school labs or computer stations, and fits neatly under your desk when not in use. Continuous movement while sitting increases Secondary Focus. Working at your desk, on your computer or on your tablet are no longer sedentary activities. A patented anti-tip safety ring on the base prevents tip-overs and falls.