This is a 5-piece set of microwave-safe, heat-resistant food storage containers from marie claire. Features: * Date memory to indicate food storage date. * Microwave and freezer safe, making them useful for lunch boxes and food storage. I received these as a gift, but I haven't used them and have been storing them at home. I'd like to pass them on to someone who will use them. Please note that I will ship them without the original box to reduce shipping costs.