Comfortask® Task Swivel Chair, Gray.  The ergonomic chair that fits you and your budget!  Pneumatic seat height adjustment, 360° swivel, adjustable back height, strong lumbar support and oversized cushions. Upholstery has stain-resistant protection. Black steel base and frame. Meets or exceeds ANSI/BIFMA standards. HON® limited lifetime warranty. Seat depth adjusts to longer or shorter leg lengths. Seat: 20w x 18d. Back: 16-1/4w x 16-3/4h. Overall height 33-3/16" to 38-1/4".  Assembly required. Casters supplied with this chair are not suitable for all floor types. Alternative casters are available to meet your specific needs. 100% Olefin Upholstery Gray Fabric