No matter which thermo mug you buy from this test field, it is superior to the good old enamel mug in every respect. Dometic won the test with the Thermo Mug 45 thanks to its excellent insulation, screw-on lid and sealable drinking opening. However, the bright red Rambler mug from Yeti (with non-slip base) and the Coffee Mug from HydroFlask also do their job well and keep hot drinks warm for a sufficiently...