Kitchenware: Get a pack of two, four or eight Pyrex Essentials glass baking trays! Suitable for: Freezer, dishwasher, oven and microwave. Material: Made from borosilicate glass. Heat Resistance: Up to 300°C. Care: Soak in hot soapy water before cleaning. Avoid harsh cleaners and dish scourers. Non-stick: Features non-stick design so it’s easy to clean.