This Pyrex lid bundles various cup-size Pyrex glass bowls (sold separately). This lid bundle makes 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, this lid will not absorb food flavors, odors, or stains. These lids are proudly made in the USA. Please check the bottom of your dishes for the numbers that match the item numbers on the bottom of these lids to ensure a proper fit.