Fat Daddio's is the finest, professional-style bakeware we've seen. If you want the best possible results from your baking, with professional quality and performance from your pans, Fat Daddio's is the way to go. We invite you to bake in Fat Daddio's pans and see for yourself that they're different. So, what makes Fat Daddio's so good? Fat Daddio's' pans are made from aluminum, essential for uniform heat distribution and the even rising and baking of baked goods. The pros bake only in aluminum. But Fat Daddio's pans are made from premium 3003 aluminum alloy that, unlike other aluminum bakeware, has been anodized. Anodizing is a safe, environmentally-friendly process that thickens, toughens and seals the naturally-occuring protective oxide found on aluminum. Fat Daddio's pans simply will not interact with even the most acidic foods. They won't peel, chip, flake, discolor, or chalk. They feature a uniform polished finish and are completely dishwasher safe. Not only this, Fat Daddio's pans come with a lifetime warranty! Compare all this to other aluminum bakeware and you'll find a big difference.