So easy, so cute! These silicone lids are a wonderful alternative to plastic and aluminum foil. An air tight seal keeps foods fresher longer in the refrigerator and freezer. These BPA-free lids may also be used for baking, steaming, cooking, and reheating. Microwave and oven safe (up to 425 degrees). Set of four lids: 11", 9", 6" and 4".