Herman Miller Mirra 2 Task Chair: Standard Tilt - Fixed Seat Depth - Non-Adj Back Support - TriFlex Back - Fixed Arms - Graphite Base & Frame Polymer Made in USA Features Standard Tilt, Standard Carpet Casters, Black Fixed Arms, Graphite Fixed Seat, Graphite Base/Frame and TriFlex 2 Polymer Back Hybrid structure, shaped for dynamic support, keeps your body in healthy alignment A reinvented Harmonic tilt creates a smooth and balanced feel as you move from one posture to another 93% recyclable , 45% of the chair material was derived from recycled resources 12-year Herman Miller warranty with Born-On-Date sticker