SPACE Collection: Air Grid Deluxe Chair with Head Rest and Mesh Seat Thick Padded Mesh Contour Seat and Air Grid Back with Adjustable Lumbar Support; Adjustable Headrest; One touch Pneumatic Seat Height Adjustment; 2-to-1 synchro Tilt Control with Adjustable Tilt Tension; Height Adjustable Angled Arms with PU Pads; Thickness 4.25; Shipping Method UPS; Color Black; Materials Air Grid/Nylon/Mesh; Assembly Required Yes; Series 55 Series; Arms With; Feature Type Height 56.25 in.; Feature Type Width 28.5 in.; Feature Type Length 27.5 in.; Depth 19.5 Material Air Grid, Nylon, Mesh; Assembly Yes; Style Modern; Finish Black