PURE UNCOATED ALUMINUM & SUPERIOR HEAT CONDUCTION: Crafted from 100% bare aluminum with NO chemical coatings – guarantees safe, toxin-free cooking. Engineered for lightning-fast, even heat distribution (up to 30% faster than steel!) for perfectly crispy cookies, golden roasted veggies, and juicy meats every time. The aluminum baking pans are made of thick and heavy aluminum, with a heavy rolled edge making this truly "commercial-grade"that provides maximized scratch resistance