This backless saddle stool from Office Star features a thickly padded saddle seat with durable low maintenance vinyl upholstery, adjustable seat angle, pneumatic seat height adjustment, 360 degree swivel and a heavy duty nylon base with dual wheel carpet casters for mobility. Optional soft wheel casters or stationary floor glides also available for a minimal charge. Dimensions: Seat Size: 18"W x 16"D x 2"Thick. Seat Height Adjustment: 19"-24"H. Overall: 24"H x 22.5"W x 22.5"D. 15 year manufacturers limited warranty from Office Star. These backless saddle stools normally ship within 2-3 business days from our CA warehouse.