These containers are suitable for both hot and cold foods, and are safe for use in the microwave, oven (up to 220°C for 20 minutes), and freezer. Made from renewable sugarcane fibrous residue through a low-energy production process, the sugarcane fiber is compostable and will naturally break down. They are waterproof and greaseproof, making them an excellent choice for serving a variety of takeaway foods such as burgers, steaks, hot chips, noodles, rice, salads, and pasta.