Executive Posture Chair is a part of the Comfort Series. This chair features the exclusive tailbone cut-out in the seat cushion that reduces fatigue and pressure on the lower back over extended periods. Balanced seating environment helps reduce stress on thighs, back, neck and shoulders. Inflatable lumbar support system provides customized adjustment to spinal curvature for improved comfort. Use three levers to modify angle of the back relative to the seat, control tilt and forward tilt for keyboard-intensive activities. Tilt is free floating or locking within a fixed range. Chair features pneumatic seat-height adjustment (18" to 22" seat-to-floor), 360-degree swivel, tilt, tilt tension, tilt lock, posture mechanism/lock and black molded polyurethane adjustable arms. T-shaped arms are height adjustable and have comfortable impact-resistant urethane arm rests. Waterfall seat design delivers nonfatigue leg support. Available in black frame only. Meets or exceeds ANSI/BIFMA standards.