Detpak's compostable PBS Cartons, are madeusing Polybutylene Succinate (PBS). This material creates a compostable and recyclable*solution for cartons, without compromising on quality or performance. The PBS Compostable Range is custom printable and certified to EN 13432. The windows made from polylactic acid (PLA) inWindow Lunch Boxes and cellulose film in HotFood Boxes. PLA is derived from cornstarch whilstcellulose film is from plant cells and performs wellin high-temperture environments. Both films arecompostable and provide crystal clear viewing.