The timeless John Deere tractor is showcased in Tervis’ 24oz Big-T insulated tumbler – a favorite for those on-the-go due to its stepped-in base that fits in most drink holders. Since 1946, Tervis has been manufacturing and assembling their unique double-walled tumblers in the U. S. A. The lifetime-guaranteed tumblers are famous for their remarkable insulating properties - keeping cold drinks colder and hot drinks hotter longer. They are also microwave, freezer and dishwasher safe.