The Harwick Evolve Dark Knight Edition is a "blacked out" version of the popular Evolve drafting chair line. This chair is perfect for creating a bold look in retro, industrial and contemporary offices. Features include the following: Ergonomic design for all day comfort and support. Duragrid black mesh seat and back keeps you cool throughout your workday. Heavy duty design supports 325 lbs. Built in lumbar support to ease lower back pain. Flip up armrests allow the chair to move closer to your desk. Black frame Pneumatic seat height adjustment. 2-to-1 Synchro Tilt with tilt tension adjustment. Waterfall seat edge for leg comfort. Infinite tilt lock allows you to lock the chair in any tilted position. Chrome pneumatic cylinder. 20″ height adjustable chrome foot ring. Heavy duty black base with dual wheel hooded casters. 360-degree swivel. Ten-year limited warranty. Chair Dimensions: Seat Size: 19″W x 19.5″D. Back Size: 17.5″W x 21″H. Seat Height: 24″ - 31″H.