Super durable, lighter than cast iron and oh, that gorgeous unexpected slate blue. Ideal for new homeowners or couples starting out, this three-piece cookie set gathers together essential 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 two blue cookie sheets heat quickly and maintain consistent temperatures for perfectly baked treats. Reinforced rims prevent warping, while two flat sides allow baked cookies to slide off effortlessly The rack cools baked goods quickly and thoroughly. A double layer of silicone-based non-stick coating ensures easy release and quick cleanup.