There's something about having a thermos full of hot coffee that makes the morning commutes a little more bearable. However, when you discover that the battery-heated coffee tumbler you got as a ...

Owala’s SmoothSip Slider Coffee Tumbler has a leakproof lid that makes sipping easy and fuss-free. It’s available in a ...

They’re also more convenient — I make my coffee and tea at home the vast majority of the time, but now, I pour it into one of the few reusable mugs I tested for this story whenever I want to ...