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-inch to 35 1/2-inch high and students can still use the patent-pending Pendulum Footrest to keep burning energy. Built with a steel frame and sturdy 13-inch square seat, they are built to last.