Molded to fit body. Waterfall edge maximizes leg support. Lumbar support reduces back fatigue. Stack six chairs freestanding (or 28 chairs with optional cart HON4033T), sold separately. Includes button glides to help protect flooring. Wallsaver design allows chair clearance when frame rests against baseboard. Sled base. Polymer shell. 21w x 21-1/2d x 31h. Four chairs per carton. Meets or exceeds ANSI/BIFMA standards. The HON® Limited Lifetime Warranty. Shpg. wt. 51 lbs. (Cannot ship UPS.)