Lockable stops at 92, 98, 106 and 114 degrees give this chair four fixed working angles instead of one, so a drafting posture and a reading lean each get a detent rather than a guess. Release the tension and the back rocks freely from 90 to 118 degrees. The winged back measures 20.5 by 24.5 inches in suede fabric, and the 2D headrest lifts 2 inches and rotates 45 degrees to sit behind the skull. Armrests are padded and set 22.5 inches apart, and the curved 21.5 by 17 inch seat adjusts from 18 to 21 inches. A gas rod handles lifting and the heavy metal base is rated to 330 lbs. Footprint measures 27.5 by 25 inches, top height 49 inches, weight 39 lbs.