Herman Miller Cosm Office chair, mid back height, standard height range, auto harmonic tilt, fixed seat depth, height adjustable arms. With 5 star base with black yoke casters for hard floor or carpet with quiet roll technology.<br />Materials and Finishes:<br />Frame Finish: G1 - Graphite<br />Chassis Finish: G1 - Graphite<br />Base Finish: G1 - Graphite<br />Arm Finish: BK - Black<br />Intercept Suspension Material Finish: 84501 - Graphite<br />Warranty: 12 Years<br /><br />Size: 29"W x 39" - 45 1/2"H