Metro Extended Height Chair features a contoured back, thickly cushioned seat for superb comfort, and chrome-plated adjustable footring. Adjusts 23 to 33". Functions include pneumatic seat-height adjustment, 360-degree swivel, tilt and tilt tension. Chair holds 250 lb. and includes 100 percent acrylic fabric upholstery, 26" aluminum five-star base with chrome finish and two-tone, dual-wheel, hooded 2-1/2" carpet casters. Seat size is 18-1/4" wide x 17" deep. Back size is 17-1/4" wide x 16" high. Optional Adjustable Arm Set with 3" height adjustment range does not come with chair and is sold separately. Chair meets or exceeds applicable ANSI/BIFMA standards.