These 10 ounce plastic cups are clear and are made from polylactic acid (PLA), which is made from agricultural crops such as corn and potatoes. They are fully biodegradable and compostable. There are no animal or petrochemical ingredients in the cups. Please note that the cups hold 10 ounces, filled to the very top, so that if you want 10 ounces of liquid, you should get the next larger size. Reuseable. Made in US. For use with cold beverages. Pack of 50. Eco Categories: Biodegradable, agriculturally based, less toxic, animal friendly, reuseable.