This awesome Presto 16 Quart Aluminum Pressure 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 matte finish. Inside fitting lid opens only when pressure falls. Stay cool handles. This cooker is thermally efficient and has mirror polished aluminum with a matte-finished base and interior. Pressure is regulated automatically to optimum levels for speed cooking. The Presto 16 Quart Aluminum Pressure Cooker 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.