This armless drafting stool from Boss features a thick, foam padded and contoured seat and backrest for added support and is available in a durable, low maintenance black vinyl upholstery. Other features include pneumatic seat height adjustment, back height adjustment, back depth adjustment, 360-degree swivel, strong 20" diameter chrome foot ring and a heavy duty nylon base with dual wheel hooded casters. Available options for this chair include adjustable height arms and floor glides that keep the stool stationary. Dimensions: Back: 17"W x 16"H. Seat: 19.5"W x 18"D. Seat height adjustment: 26.5" to 31.5"H. Overall: 25"W x 25"D x 41.5" to 49.5"H. Six year limited warranty from Boss. These contoured drafting chairs normally ship within 2 business days from our GA or CA warehouse.