Executive high-back chair is a part of the Comfort Series. This chair features the exclusive tailbone cutout 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. Waterfall seat design provides nonfatigue leg support. Chair features pneumatic seat-height adjustment (20" to 24" seat-to-floor), 360-degree swivel, tilt, tilt tension, black molded polyurethane adjustable arms, unibody and upholstered wood shell. T-shaped arms are height adjustable and have comfortable impact-resistant urethane armrests. High-back chair has a five-star composite base includes hooded dual casters. Chair is available in black frame only. Seat measures 20" wide x 19" deep x 27" high. Chair meets or exceeds ANSI/BIFMA standards..