Most chairs give you one or two adjustments and call it ergonomic. This one moves in five separate places. The 12-inch by 7-inch headrest travels 4 inches up and down, 1.5 inches forward and back, and tilts through a 65-degree angle, so head support lands where your neck actually is rather than somewhere near it. The lumbar pad shifts 1 inch vertically and 1 inch horizontally to meet the exact hollow of your back. Both armrests rise and fall through 3.5 inches, with 26 inches between their outer edges and 20 inches of clear space between them. The 19.5-inch square seat lifts from 19 inches to 23 inches, and the 19.5-inch by 21-inch backrest reclines from 87 degrees to 100 degrees under a tilt tension control that sets the resistance. Sitting comfort comes from a thickened waterfall seat, 3 inches deep and rounded off at the front edge so it does not press into the back of the thighs and restrict circulation the way a square edge does, filled with high-density sponge that is elastic and supportive. Selected mesh fabric wraps the frame, breathable and tear-proof rather than merely thin. A sturdy coat hanger is built into the top of the backrest, giving coats, jackets, or bags a dedicated spot instead of the floor. A strong gas rod, a wide five-claw metal base, and 360-degree universal wheels carry a rated 330 lbs across a 28.5-inch square footprint at 45.5 to 49.5 inches tall. The 26.5-lb chair requires assembly.