Nonstick surface inside and out, making rectangle baking sheets for oven easy to clean, hand wash is recommended These nonstick baking sheets set are oven safe, retain consistent heating and won ' for t warp and for pop out of shape For sweet or savory baking; from cookie to sheet pan dinners carbon steel which will never rust for a for of durability Meet most of your daily oven pans need Flexible and stackable, making metal baking pans store easily