Our top-rated Naturals®Bakeware collection is made of pure aluminum for superior heat conductivity and produces consistent evenly browned baked goods every time. These premium pans have a lifetime durability and will never rust. Encapsulated galvanized steel rims prevent warping. Creativity meets natural aluminum sustainability. Bake mega batches of delicious cookies and bars with this extra large cookie sheet. Fits all standard size ovens 35% larger surface than the half sheet Rustproof aluminum ensures even heating Galvanized steel rims for added strength and durability. Material: Aluminum. Measures 21x15x1”H. Care : Hand wash. Country of origin: Made in America. Features: Non-Stick Measurements: 7 Depth/Inches Care: Dishwasher Safe Material: Aluminum Country of Origin: Made in US