This fabric upholstered drafting stool from Office Star features a padded seat and backrest with built-in lumbar support, one touch pneumatic seat height adjustment, back height adjustment, seat depth adjustment, fixed height foot-ring and a heavy duty five star nylon base with dual wheel casters. Additional armrest and caster options also available on this model. Dimensions: Seat Size: 18.5"W x 18.25"D x 3"Thick. Back Size: 17"W x 15.5"H x 3"Thick. Seat Height Adjustment: 24.75" - 29.75"H. Overall: 47.5"H x 20"W x 23.25"D. 15 year manufacturers limited warranty from Office Star. These drafting task chairs normally ship within 5-7 business days from our CA warehouse.