12 - 36 months. Made with a rugged polypropylene shell and sturdy matching powder-coated steel legs. Arched legs provide comfortable armrests and a steadying handhold for little ones. Chairs are steel-braced on the underside for extra stability, and nylon-tipped feet help protect classroom floors. Measures 13.5"L x 15"W x 17.5"H and has a 150 lb. weight limit. Factory second item, contains minor imperfections -- you probably will not notice! Same high quality at a great low price. Due to these discounted prices we cannot offer our standard warranty. All Sales Final - No Returns. Limited Quantity!