Cap off your coffee with this super-natural lid that requires no magic to fit 10-, 12- and 16-ounce cups. Made with PLA. Completely compostable when you're done sipping. Dome shape keeps your beverage from sneaking out before it should. This product is designed to be composted in a large, commercial facility. These do not exist in all communities. Check with your local officials. Package is not compostable.