Lightweight Heavy Duty Polypropylene and Steel Tube Stacking Chair It is durable chair with middle bar and foot rest. Middle bar make the chair really strong and you can use years and years. Sitting area also different then ordinary stacking chair its design to give you more comfort while sit on it. Stack 10 chairs high or Even More with Wall. Width: 500mm Depth: 490mm Height: 780mm Seat height: Adult 480mm