OFFICE FACTOR, Ergonomic Executive Mesh Chair High Back Aluminum Frame Seat Slider Designer Base GOOD QUALITY NYLON MESH ON SEAT AND BACK ALUMINUM FRAME AND ARMS CHROMED GAS LIFT DESIGNER CHROMED BASE, SEAT SLIDER, ADJUSTABLE HEAD REST MULTI FUNCTION MECHANISM, TILT LOCK, TILT BACK, SWIVEL PU CASTERS FOR HARD FLOOR, 240 POUNDS RATED, 5 YEAR LIMITED WARRANTY