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Cauldryn has made the swiss army knife of heated travel mugs
If you thought that the cutting edge of vacuum-insulated coffee mugs was to buy one in a color other than black then, boy, have we got news for you. Cauldryn Coffee is showing off its modular coffee cup that promises to revolutionize the way we carry around beverages. At its heart, is the coffee mug itself, which comes with a heating element in its base and a plug for an external battery.
