National Public Seating's 8100 Poly Shell Stack Chairs are durable and affordable enough for all your school's classrooms. Students will enjoy sitting on the comfortable one-piece, high-density polypropylene shell. Plastic frame-shields protect children from snagged clothing and pinched fingers. The chrome-plated, 17-gauge steel frame features three cross braces for added strength. The tablet arm flips up so students can easily get in and out of the chair. Available in a selection of colors to complement any room.