The timeless John Deere tractor is showcased in Tervis’ 16oz most popular insulated tumbler. 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.