Super durable, lighter than cast iron and oh, that gorgeous unexpected slate blue. Perfect for batches of cookies and sheet-pan meals, our large slate blue baking pan is part of our exclusive bakeware collection that takes its cue from professional kitchens. Made of carbon steelan alloy of 99% iron and 1% carbon that's nearly indestructiblethe baking sheet heats quickly and maintains consistent temperatures for perfectly browned and crisped foods. A double layer of silicone-based non-stick coating ensures easy release and quick cleanup.