Compostable black lids for 8S to 24 oz hot cups are made from PLA, a product derived from plants. These lids are 100% compostable and will break down in a commercial composting facility in 2 to 4 months but are still light and strong like plastic. These biodegradable lids are eco-friendly and are great for warm beverages like coffee, tea, and hot cocoa. Great for the environment and business, impress your customers with your commitment to green packaging!