Mirus Series Mid-Back Synchro-Tilt ChairAdjustable lumbar support for exceptional comfort. Unique design allows chair to effortlessly recline with your body's natural movements. 100% polyester upholstery with Nano-Tex® provides superior stain-resistance. Height- and width-adjustable arms offer custom comfort. Five-star base with casters for easy mobility. Recommended Applications: General Office & Task; Seat/Back Color: Black.