These Food Container Lids are designed for use with 12-32 oz. food containers and are made from CPLA or modified corn-based plastic. They are also BPI certified compostable and meet ASTM D6400 and/or D6868 for compostability. They are disposable to help reduce cleanup time. Durable, these lids can be used with hot or cold food items and are microwave and freezer safe for maximum convenience. • Use with PrimeWare FC-12, FC-16 and FC-32 containers