Suitable for both hot and cold foods. Not suitable for use in a microwave or oven. Not recommended for long-term refrigeration. Made from paper with PLA coating inside. This PLA coated paper is food grade and Eco-friendly, creating a water and grease-resistant layer that helps to keep food fresh. Versatile and perfect for a variety of foods, such as soup, congee, noodle, yogurt, curry, and laksa. Industrial Compostable.