The Hourglass stack chair with arms is an exceptionally sturdy seating option for any space. Its heavy-duty 7/8" tubing and 18 gauge metal construction ensures durability, while side bars provide additional protection to the frame when stacked. The chair also features rear and under-seat reinforcement bars for added strength. It boasts a two-piece back without exposed fasteners, as well as epoxy powder coating to prevent chipping and corrosion. With high density 1.8 lb. foam for resiliency, non-marring glides, and a seven-year warranty against factory defects, this chair is built to last.