Mesh Desk Office Chair The ergonomic chair provides 4 supporting points(head/ back/ hips/ hands) and a proper lumbar support. It’s easy to adjust seat height, headrest, backrest and flip-up arms to meet different needs, good for sitting long hours. Suitable for people of about 5’5″ to 6’2″. Dimensions: 25.6″W x 22″D x 45.3″-54.9″H, the Seat Dimensions: 20″W x 19.3″D x 18.5″-22.05″H. Loading Capacity: 280 lbs. Tilt backrest back 90~120°. It’s easy to raise or lower the folding armrest by pressing the black buttons on the armrest. Adjustable armrests with good material can fit any office appliance with comfort.