Bio-Straw is a Paper Straw composed by 40% cellulose paper and 60% hay. Pack of 50. * Biodegradable * Compostable * Ocean-Friendly * No Flavor * No Dye * Sturdy * Long lasting without loosing resistance and getting soggy * High Quality European Standards * Certified Paper * Made in Italy The bag containing the straws is also an eco-friendly material called Mater-Bi, used mainly in Europe. MATER-BI is a family of completely biodegradable and compostable bioplastics which are being used to provide low environmental impact solutions for every day products.Mater-bi is made of corn starch, vegetable oil derivatives, and biodegradable synthetic polyesters".