Mid-back chair offers a breathable mesh back that conforms to your body for more comfort. Fabric-upholstered seat is cushioned and adjusts from 16-6/13" to 21-1/7" high. Polyurethane-covered arms adjust in height from 8-3/7" to 11" and width, and the chair features a swivel/tilt so you can find the best sitting position. 25-10/11" diameter, five-star base is made of glass-filled nylon and is equipped with 50mm hooded, dual-wheel casters for easy chair movement. Weight capacity is 250 lb..