This ergonomic drafting chair from Boss Office Products features a multi function mechanism that allows the chair to be adjusted in several different positions for a customized and supportive ergonomic fit. Other features include thick foam padded seat and backrest cushions, choose from fabric or LeatherPlus upholstery, back height adjustment, adjustable back angle with angle lock, seat tilt with infinite tilt lock, pneumatic gas lift seat height adjustment, 360 degree swivel, 20" diameter chrome footring and a large 27" nylon base with double wheel carpet casters. Additional caster options available for this model. Meets or exceeds ANSI/BIFMA standards. Optional adjustable or fixed arms available. Dimensions: Seat Size: 19.5"W x 17.5"D. Seat Height Adjustment: 26" - 29.5"H. Overall: 43.5" - 48"H x 27"W x 35.5"D. Six year limited warranty from Boss. This chair normally ships within 2-3 business days from either our CA or GA warehouse.