Can be used in hot or cold applications. They can be stored in a freezer or refrigerator without cracking or denting, and are ideal for freezer to oven cooking applications. Exceptional temperature endurance from -40° to 450°. Provides a cut resistant surface for food preparation, cooking, baking and serving directly on the same tray. Rounded radius corners enhance heating and reduce hot-spot areas for more even cooking in a microwave oven.