When paired with the included bright blue polypropylene lid, it keeps food fresher, longer, than when covered with traditional foil or plastic wrap. Plus, the lid provides a safe, secure seal to prevent outside contaminants from getting in, and messes from getting out. The container and lid are able to withstand temperatures from -32 to 160 degrees Fahrenheit. This food storage set is perfect for restaurants, caterers, delis, and cafes and can be used to store freshly-chopped fruit salad, sliced vegetables, soup stock, or stew.