2300 Series Kool Chair creates a fun, comfortable environment in any space. Perforated back offers an attractive design that enhances circulation and airflow. Radius conforms to your back for maximum comfort. Silver, powder-coated frame contrasts the bold color of the polypropylene seat and back for a creative, interesting look. Back supports made with injection aluminum alloy enhance durability. Four-leg design includes casters for easy mobility. Stack chairs up to 15 high to save storage space.