Lorell Executive Hi-Back Chair,30-1/2"x25-1/2"x47"-50-1/2",Black Executive High-Back Airseat Fabric Chair offers advanced technology airflow fabric that is highly breathable giving you the sensation of sitting on air. Back is ergonomically designed for lower back comfort. Other features include aluminum open loop frame with upholstered arms, five-star brushed aluminum base with plastic scuff guards, pneumatic seat-height adjustment, back-height adjustment, 360-degree swivel, tilt and tilt tension. Seat-to-floor dimensions are from 19" to 22-1/2".