Our line of bowls are made from surplus sugarcane and wheat straw agricultural fiber. Grease and cut resistant. Microwave and freezer safe. Conforms to FDA guidelines for food use Usable for foods up to 200 degrees F. Sustainable replacement for plastic, Styrofoam, and paper disposables. Composts in 1-3 months in a commercial composting system (ASTM D-6400 and BPI certified).