World Centric Wheat Straw Bowl - Case Of 12 - 20 CountWorld centric compostable wheat straw bowls are made from wheatstraw, a leftover agricultural fiber and an annually renewable resource. They are microwave and freezer safe and can be used for both cold and hot items up to 220 degrees fahrenheit. Wheatstraw is the remaining plant fiber after the grain, which stores any allergens, has been removed and thus is gluten free. There are no plastic or wax linings and they conform to fda guidelines for food