Innovative school stack chair features a molded seat with vented back, reinforced ribbing in back and under seat for strength, steel legs with steel lower back support. No penetration of screws through the seat surface. Available with ball glides made for durability and protection on carpeted floors. Comes with 2 blue, 2 red, 1 yellow, 1 green. Assembled Weight: 6.00 lbs. Assembled Dimensions: 18.00"x 18.00"x 27.75".