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We tested 12 of the best coffee thermoses to find the best insulated and most leakproof ones out there.Owen Burke/Business Insider
Don't let your morning be ruined by a faulty coffee thermos, whether that's sipping lukewarm java on the train or opening your bag to find a coffee-soaked computer. The first thing a coffee thermos has to do is keep coffee from the best coffee maker hot or cold, as you like.