• Office Star task chair offers an air grid back and back with built-in lumbar support.  The mesh screen back provides increased breathability.  This office chair has af one-touch pneumatic seat-height adjustment, 360-degree swivel, synchro tilt control with adjustable tilt, tilt lock, and tilt tension.  The office chair angled arms have soft pads are height adjustable.  You'll appreciate the heavy-duty over sized dual wheel carpet casters.  Office Star's Air Grid task chair's seat size is 20.5 inches wide x 19.5 inches x 3.5 inches thick, while the back size is 20.5 inches wide x 19 inches high x 1.25 inches thick.  You can spend a lot more and not find a chair as comfortable or as durable as this Office Star Air Grid office chair.  It is available in black only.  Some assembly is required.