High-back chair offers a breathable mesh back that conforms to your body for more comfort. Fabric-upholstered seat is cushioned and adjusts from 17" to 21-7/13" high and 18-4/21" to 20-4/25" wide. Arms are covered in polyurethane foam and adjust in height and width, and the chair features seat glide and asynchronous control so you can find the best sitting position. 28-7/25" 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..