Alvin American Style drafting chair is a ruggedly constructed traditional draftsman's chair that offers both comfort and durability. Features include pneumatic height control, height and depth-adjustable hinged backrest with polypropylene back shell, dual-wheel casters, and a 23" tubular chrome steel base with built-in foot ring. Seat cushion is made of long-lasting, comfortable molded foam and is 18"w x 18"d x 4" thick. Backrest is 15"w x 10"h. Height-adjustable from 23 to 31 inches. Includes both locking casters and non-slip floor glides. Charcoal fabric. Weighs approx. 32 pounds. Great drafting chair for office, shop, school, studio.