Comfortable lab stool adjusts in height from 17" to 22" for a variety of uses. Pneumatic lift adjusts seat height with simple foot pedal plate. The 16" diameter seat is covered in vinyl for easy maintenance. Stool swivels 360 degrees for easy access to all areas of your workstation. 2" dual-wheel carpet casters allow easy rolling. Low-height lab stool meets/exceeds applicable ANSI/BIFMA standards.