Our thin card food containers are supplied with PLA lining and PLA window options (more resistant to moisture), and our thick fluted-card containers are supplied without a PLA-lining. They have earned the required levels of managed forestry, food safety and compostability certification. Our products do not contain petroleum-based plastics, chemical dyes or inks. We only use plant-based paper, plastic and inks in our materials. For more technical information please visit the FAQs section on our Help Desk.