How does a thin walled metal travel coffee mug not transfer the heat of the coffee to the outer surface of the cup?

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My wife recently got me a new travel coffee mug and it’s the best one I have ever had as far as keeping the coffee really really hot for a long time. It is very thin walled and I just don’t understand how the heat does not transfer to the outside surface of the cup.

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Anonymous 0 Comments

Does it have a Ceramic coating? they are good at stopping heat transfer. I have seen those coatings on racing exhaust pipes.

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