Commercial-grade, heavy-gauge aluminized steel provides fast, even heat distribution and lasting durability and stability. Swiss-engineered, PTFE, ceramic-reinforced, two-layer, commercial-grade coating provides the ultimate non-stick food release and is scratch-, stain-, corrosion- and abrasion-resistant. Micro-textured pattern ensures even baking by minimizing surface contact and promoting airflow, and adds structural rigidity to help prevent warping. Visible pan dimension markings on top surface allow for quick and easy size identification. Smooth, seamless design for easy, thorough cleaning. Square-rolled edges add reinforcement for structure, strength and durability, and provide a secure grip for easy handling and transferring to and from the oven. 9″ Pans have straight side walls for making uniform layer cakes. Ideal for brownies and cinnamon rolls. PFOA-free.