This tumbler is made by the one and only, Thermos Nissan ("Thermos"). Don't be fooled by competitors offering the same insulating and protection properties of Thermos Nissan. They've been around a long long time and their products have only gotten better with the years. This tumbler will keep any drink you have, whether it's hot or cold, the same temperature for 4 hours. Essentially, you could wake up in the morning, pour yourself a cup of coffee, and still have the same, piping hot coffee at noon. Combine that with the fact that you can roll over it with your car and not have it break and you have one amazing travel tumbler.