18" Stack Chair (5-pack) set of 5 durable kids chairs Chrome finished tubular steel frame chairsare lightweight and easy to clean; non-marring self-leveling glides provide stability Comfortable contoured molded seat with a vented back is made of easy-to-clean polypropylene Recommended for grades three and up; chairs stack tosave space Measures: 31" H x 19" W x 20.75" D (each) Seat: 18" H x 14.5" W x 14.5" D