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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If the wall is just metal, then the heat will be transferred as metal conducts heat very well. If this isn’t happening, there must be a layer of something that isn’t metal in there. Most companies love to advertise their tech for doing stuff, you can probably find out more if you look up the product you have.
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