This awesome little cooker is great for quick side dishes, apartment living, camping, motor homes, and backpacking! Made from commercially pure, virgin aluminum. Mirror polished; interior and base matt finish. Inside fitting lid opens only when pressure falls. Stay cool handles. These are thermally efficient, mirror polished aluminum, with matt-finished base and interior. Pressure is regulated automatically to optimum levels for speed cooking. Features a "goof-proof" lid that seals from the inside like a jetliner door, ensuring greater safety. A multiple stem vent prevents overpressure, and is listed by Underwriters Laboratories Inc.