These World Centric® compostable clear cold cup lids fit 12 - 22 ounce paper cold cups. These lids are made from NatureWorks Ingeo™, which is derived from plants grown in the U.S. These cold cup lids are a great alternative to plastic lids as they are made from plants, not petroleum and are certified compostable to break down in 2-4 months in a commercial composting facility.