These heavy-duty plastic chairs are a great fit with our student tables.Constructed of 3/8" solid plastic, this stack chair features a steel frame and 16-gauge tubular crossover leg design. The bright nickel-chromed steel frame has swivel designed self-leveling rubber cushioned glides in either nylon or steel.They can be stacked or placed upside down on the edge of a table for convenient storage. Available in your choice of colors and sizes.