Perfect for any classroom space, this innovative, school stack chair is built for comfort and durability. The 12" seat height is perfect for children ages 3 to 7 years old. Stack chair features a molded plastic seat with vented back for comfort, reinforced ribbing in back and under the seat for added strength, and steel lower back support. Frame and screws do not penetrate through the seat surface. Chrome chair legs are equipped with composite ball glides made for durability and protection on carpeted floors.