They’re extremely useful, because you’ll have no trouble taking your hot or cold drinks with you outside.
In fact, these mugs are also THERMOS, so you won’t have to worry about keeping your drinks as hot as possible in winter, or as cool as possible in summer.
And you won’t get a more original-style mug than these, as they’ve printed the front with old patent images of historic everyday objects revisited by Digitaline Artree.
So don’t hesitate to choose the one that suits your drinking style!