Managerial mid-back chair of HON Alaris Steel Seating Line features passive hip pivot motion for exceptional comfort. Resilience back material molds to your form and then springs back to original shape. Functions include pneumatic seat-height adjustment, 360 degree swivel and tilt lock. Made with a 3-1/2" foam cushion and a steel tubular frame. Optional height adjustable T-arms are sold separately. Mid-back chair meets or exceeds ANSI/BIFMA and ISTA performance standards.