Deluxe stool for people who use counter-height work surfaces. Thick 2-ply HR foam back and 3-ply HR foam seat cushion or True Comfort seat cushion. The adjustable height, upholstered back with built-in lumbar support and seat with a waterfall edge. The mechanism provides tension control, independent seat angle with infinite locking control, independent back angle control, forward tilt pivot and pneumatic seat adjustments. Includes 26" 5-star base with 2" dual-wheel carpet casters. Foam seat is available in Fabric Grades I, II, III, IV, V and COM; True Comfort is available only in Grade II Astral fabric. Assembly required.