From pre-school to grad school the DuraStack chair has a size that fits just right. Five sizes for a better, more comfortable fit for anybody. More sizes than other chairs on the market, including a unique extra large chair. Exceptional comfort. Economical price. Sit up and take notice of the superior comfort and value of the KI DuraStack chair. One-piece molded construction. Smooth waterfall front edge. Radiused edges. Metal back plate for added seating support.