Best innovation since sliced bread. Once you get a couple of these in your kitchen, you will never go back to plastic wrap or tin foil. Just place the lid of these over any pot, pan, bowl, whatever, and it creates an airtight seal. Use it in heat or cold: to keep food fresh in the refrigerator, to prevent pans from spattering and to seal in heat on the stovetop or in the oven. It's great for bringing a dish to pass...and we haven't even talked about how adorable they are! And dishwasher safe, so easy to clean, too. And "green" since it saves on waste. A staple in the modern kitchen, these lids make a great housewarming, wedding, or birthday gift.