BioPak Paper BioBowl Lids are made from premium paperboard and coated with Ingeo™ – a bioplastic made from plants, not oil. We use a heavy-duty, premium quality board, giving our paper bowl lids superior stability, better fit and insulation to match our paper bowls. Certified industrially compostable to Australian AS4736 standards, our paper bowl lids are made for the circular economy. Our bowl lids are also soup-safe and suitable for hot or cold food. Our paper bowl lids are suitable for contents up to 60 degrees. For anything hotter, please use CPLA or PP lids.