Also available as a pack of 100, SKU - CPL-CS-2S-P. Fits cups- CP-CS-2S, CP-CS-3, CU-SC-2N-LFP, SF-NT-2 and CU-SU-4. World Centric compostable 2 to 3 ounce flat PLA lids are made from PLA, a plant-based plastic. They are suitable for cold liquids only and are not microwavable. PLA products should be stored in a cool place below 110 deg F and out of direct sunlight. These lids are certified compostable in a commercial facility, which may not exist in your area.