Multipurpose lab stool without back features long-wearing, black vinyl upholstery and a generously cushioned 13-1/2″ diameter seat. Seat height adjusts pneumatically 5″ from 16″ to 21″. Lab stool features a full 360-degree swivel seat, 2″ swivel casters and 18″ diameter, polished aluminum five-star base. Weight capacity is 250 lb. Stool meets or exceeds applicable ANSI/BIFMA standards.