World Centric Compostable Clear Flat Lids for portion cups are made from PLA, a bio-based plastic made from plant sugars. Great for takeout restaurants, cafes and delis, these eco-friendly portion cups make it easy to sample foods or hold sauces, dressings and condiments. They are lightweight and freezer-safe. PLA products are suitable for cold to warm foods, and they should be stored in a cool place below 110 degrees Fahrenheit and out of direct sunlight. They're USDA Certified Biobased, Compost Manufacturing Alliance (CMA) Approved, NSF Industrial Certified Compostable and TUV Austria OK Industrial Certified Compostable. As a certified B Corporation, World Centric is dedicated to upholding the highest standards of social and environmental responsibility, transparency and accountability. They proudly give 25-percent of their profits to grassroots organizations driving global change. Choose World Centric compostable foodservice products and make a difference today.