Wheatstraw is not only an annually renewable resources, but can also be turned into products normally made from plastic or paper. Wheatstraw is the remaining plant material after the wheat grain and chaff have been extracted. We use these byproducts to make compostable tableware. Can handle hot liquids up to 220° F (moisture forms at the bottom for hot food items). Fully compostable, sturdy and strong. BPI Certified. Meets ASTM D-6400 standard for compostability.