A good thermal mug should have a good insulating layer and thus keep your drink warm or cold for a long time. Another criterion for a good mug is the closure. The lid should be easy to close and 100% tight so that the drink does not leak. A good thermal mug also fits particularly well in the hand and has a non-slip surface. A good mug is rounded off by a stylish design. Once you have found your personal favorite, nothing stands in the way of enjoying your favorite coffee on the go.