Thermos products deliver what matters every time. As the leading manufacturer of convenient insulated products for over 100 years, Thermos is trusted by consumers to provide innovative portable containers that promote a safe and healthy lifestyle. Thermos delivers when it matters. Thermos brand products offer superior insulation that keeps food at its maximum temperature retention for hours and the 12 ounce FUNtainer food jar is no exception. Thermos vacuum insulation technology virtually eliminates temperature change within the beverage container by creating an airless space between two stainless steel walls. The result is an insulation layer that performs better than any other. A superior insulated container you can depend on to keep your child's food hot or cold for longer. This food jar keeps food cold up to 7 hours and hot for 5 hours. Constructed with double wall stainless steel, this 12 ounce food jar is built to withstand the demands of everyday use with its durable stainless steel interior and exterior and features a wide mouth that is easy to fill, serve from and clean. In order to maximize the incredible insulation technology, it is recommended to pre-chill or pre-heat the jar just prior to use.