Innovative school stack chair features molded seat with vented back has reinforced ribbing in back and under seat for strength and 16 gauge tubular steel legs with steel lower back support. Full MIG welded frame. No penetration through the seat surface. SuperGlide composite ball glides for durability and protection on hard floors and carpet. Our school stack chairs QUICK-ship. Available in scratch-resistant chrome in 8 popular colors.Note Standard Glides available upon request - Must add G to the item number on the Purchase Order. Colors may vary and are subject to change without notice.