Super durable, lighter than cast iron and oh, that gorgeous unexpected slate blue. Ideal for new homeowners or couples starting out, this slate blue set gathers together bakeware from our exclusive collection that takes its cue from professional kitchens. Made of carbon steel—an alloy of 99% iron and 1% carbon that's nearly indestructible—the pans heat quickly and maintain consistent temperatures for perfectly baked foods. A double layer of silicone-based non-stick coating ensures easy release and quick cleanup.