Upholstered in durable black Caressoft vinyl for easy maintenance and cleaning, Adjustable seat height with a 6-inch vertical height range. Dual wheel casters allow for easy movement. Attractive chrome finish on the base and gas lift, Dimensions: Seat Size: 17-inch Dia., Seat height: 21-inch - 27-inch H, Overall Dimensions: 24-inch W x 24-inch D x 21-inch - 27-inch H