Contoured back and thickly cushioned seat for superb comfort. 26" aluminum five-star base with chrome finish and two-tone dual wheel carpet casters. 100% acrylic upholstery. Adjustable chrome-plated footring. Pneumatic seat adjustment. Spring-tilt mechanism with tilt, tilt tension. Seat height adjusts 23" to 33". Seat: 18-1/4w x 17d. Back: 17-1/4w x 16h. Shpg. wt. 31 lbs. Assembly required. Casters supplied with this chair are not suitable for all floor types. Alternative casters are available to meet your specific needs.