These are genuine Corningware FS-1-PC French White round replacement food storage lids. These versatile lids are compatible with the Corningware 2.5qt FS-1 dish (sold separately), which makes it a valuable addition to any Corningware kitchen. Made from 100% BPA-free plastic and is completely safe to use in the microwave, refrigerator, or freezer. The FS-1-PC French White lids are built for a comfortable press to fit; snugly cover food during storage and reheating. These lids are to keep other food odors out and to maintain freshness of the ingredients inside the dish. The FS-1-PC lids can also be cleaned in the top rack of the dishwasher for convenient reuse. These lids are made in the USA.