National Public Seating 800 Series Premium light-weight Folding Chair features a powder coated steel frame and incorporates the strengths of a metal folding chair with the benefits of a plastic folding chair. Chair featuring seat and back is made of molded/contoured, color impregnated polypropylene plastic with special edging to enable stacking up to 80 inch high. Premium light-weight plastic chair seat and backs won't fade or rust and are not cold to the touch like steel chairs. Chair seat has a steel frame for added strength and features 7/8 inch round tubing, two ''U'' shaped cross braces each one attached to the main frame with two rivets on either side. Chair is perfect for indoor and outdoor events, classrooms, auditoriums, cafeterias, graduations, receptions, worship centers etc includes ''V'' shaped stability plug.