Metro Collection Extended-Height Chair, Supports Up To 250 Lb, 23" To 33" Seat Height, Black Seat/back, Chrome Base Contoured back and thickly cushioned seat for comfort. Chrome-plated footring adjusts for individual preference, and to help ease pressure points in the legs. Large, 28", five-star, aluminum base for added stability. Swivel tilt mechanism with adjustable tilt tension that may help prevent fatigue and ease pressure points in the legs. Two-tone dual wheel carpet casters for easy mobility. Optional adjustable arm set offers 3" height adjustment range (Sold Separately).