Banded managerial mid-back chair ergonomically conforms to your posture and provides a cool seating environment. SeatFlex design is made of a series of elastic bands that conform to your body for the ultimate sitting experience. Chair features adjustable arms and a five-star plastic base with dual-wheel casters. Functions include pneumatic seat-height adjustment, 360-degree swivel, knee tilt, tilt tension, tilt lock, posture mechanism/lock and dual-clutch posture control. Mid-back chair supports up to 350 lb.