These Anchor Hocking lids make preparing, serving, storing and reheating food more convenient and much less wasteful than plastic wrap or aluminum foil. These versatile lids are safe for use in the freezer, refrigerator and microwave and they clean up easily on the top rack of the dishwasher. Made of non-porous, BPA-free plastic, these lids will not absorb food flavors, odors or stains.