commercial grade 18 gauge aluminum the choice of professional bakers, 15 x 10 x 0.75 inch patented pebble pattern designed in terre haute, indiana, allows airflow under baked goods for more even browning and quick release healthy baking, doughmakers natural non-stick properties due to pebble pattern surface, eliminates the need for shortenings and other oils or sprays more durable and rust resistant than non-stick and aluminized steel, scratching doesn't effect performance of the bake pan to keep bakeware looking its best, hand wash promptly in hot soapy water Item shape: Rectangle