An insulated food jar and thermos is a type of container that is designed to keep food hot or cold for extended periods of time. These jars are generally made from materials such as stainless steel or plastic, and are equipped with insulation, such as a vacuum layer or a foam layer, to help maintain the temperature of the food. Insulated food jars are a convenient and practical option for outdoor activities such as camping, hiking, and backpacking, as they allow you to enjoy hot or cold food even when you are away from home. They are available in a variety of sizes and styles, and can be used to store and transport a wide range of foods, from soups and stews to salads and fruits. Some insulated food jars also have additional features such as leak-proof lids, built-in spoons, and carrying straps, which make them more convenient and versatile.