Made from plant fiber products guaranteed to break down in 2-3 months in industrial composting facilities. Microwave and freezer safe bowls have no plastic or wax lining. Can be used with hot foods up to 220 degrees F. Meets FDA specifications for food contact. Meets ASTM D-6400 standard for compostability. Lids sold separately. Use with our clear compostable lid, Item Number 310-12-23.