Embossed Natural Aluminum Bakeware enhances the look and performance of our hugely popular baking pans. Exclusive Prism grid adds durability and provides easy release while also improving air flow for uniform crisping. Encapsulated galvanized steel rims prevent warping. This classic Half Sheet sized baking sheet becomes a bold beauty with the addition of the prism grid lines. Naturals commercial bakeware is made of pure aluminum which will never rust for a lifetime of durability. Prism design provides better airflow. Foods bake and brown evenly due to aluminum's superior heat conductivity. Reinforced encapsulated steel rim prevents warping and adds strength Compatible with parchment paper or silicone baking mats if desired