Herman Miller Mirra 2 Task Chair: Tilt Limiter - FlexFront Adj Seat Depth - Adj Lumbar Support - TriFlex Back - Adj Arms - Graphite Base & Frame Polymer Made in USA Adjustable model features Black Adjustable Arms, AireWeave 2 Adjustable Suspension Seat, Tilt Limiter, Standard Carpet Casters and Graphite TriFlex 2 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