These (4) Pyrex 7201-PC yellow lids fit the 4-cup glass bowl (sold separately). These 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. These lids are proudly made in the USA