High-back work chair offers a supportive mesh back and mesh seat for responsive seating. Adjustable-height arms adjust vertically to accommodate different arm lengths from the shoulder to the elbow. Functions include 360-degree swivel, pneumatic seat-height adjustment, tilt, tilt tension, and tilt lock. Tilt allows a comfortable rocking/reclining motion. Tilt tension adjusts the amount of resistance when reclining to accommodate individual weight and work styles. Tilt lock secures the chair in an upright position for constant back support when not reclining. Five-star base features 2" diameter dual black wheels and injection-molded plastic. Arms are also made with black injection-molded plastic and built-in polyurethane arm pads for comfort.