Embossed grid pattern 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. Natural aluminum affords the best possible heat dispersion to create perfectly browned baked goods every time. Encapsulated galvanized steel rims prevent warping. Pan should be hand washed or discoloration will occur. If any discoloration occurs during hand washing or baking this is merely cosmetic in nature and will not affect baking performance. Made in USA.