It's another area of expertise. Our height adjustable stools are the perfect companion for our AlphaBetter® Desk. Everyone needs a rest on their way to the head of the class and these stools give students the perfect way to sit and sway. These tip-resistant stools adjust from 21" to 35 1/2" high and students can still use the patented Pendulum™ Footrest Bar to keep burning energy! Built with a steel frame and sturdy 13" square seat, they are built to last.