Mirra Chair Herman Miller Deluxe Fully Highly Adjustable Home Office Desk Task Chair MR223 with Forward Tilt Seat Angle, Adjustable Arms, Flexfront Seat, Graphite Frame with Blue Fog Airweave Seat and Triflex Backrest, Standard Casters USA 12 Year Factory Warranty INCLUDED! Genuine Highly Adjustable Mirra MR223 with Forward Tilt Seat Angle, Adjustable Arms, FlexFront, Tilt Limiter & Adjustable Lumbar Support Mirra is an innovative blend of passive and active adjustments that provides a new reference point in performance, aesthetics, and value. The 12-Year USA Warranty covers everything that makes a Herman Miller Office Chair--including casters, tilts, pneumatic cylinders, and all moving mechanisms in the USA only.