Mid-back task chair features adjustable arms and molded foam, contoured seat and back that provide long-lasting comfort. Waterfall seat provides under-thigh support. Functions include pneumatic seat-height adjustment, 360-degree swivel, tilt tension, tilt lock and asynchronous control. Waterfall seat provides under thigh support. Task chair offers a 250 lb. weight capacity and is available in black frame only. Exterior seat material is 100% polyester.