6" Square Heavy plates are made from natural molded fiber and have no PFAs intentionally added. The /natural color is reflective of the improved reformulation. The design has also been improved to strengthen the product for greater rigidity, improved stacking, and allow for greater case-pack efficiency. BPI Certified Compostable. Meets ASTM D6400 and/or D6868 for compostability, and are FDA approved for food contact. Microwave and freezer safe.