Keep wiggly students comfortable with the Adjustable-Height Active Stool with Circular Seat from Learniture. The padded round seat adjusts in height for custom comfort while the curved, non-slip thermoplastic rubber bottom encourages twisting, rocking and swiveling without disrupting the class. Plus, the backless design encourages proper posture while strengthening core muscles. The polypropylene shell is easy to clean and the lightweight design makes mobility and storage simple.