Coffee experts advise against reheating your coffee in the microwave, so snag our editors’ favorite self-heating mug while it ...

Ember's smart mug is currently on sale for Black Friday. You can take off 36%, or nearly $54 to keep your hot drinks hot.

Before you know it, an hour has passed, and you realize your warm cup of coffee is still sitting there, mostly full and cold.

Stick around to discover whether you can safely reheat your Starbucks coffee in its original cup, or if you're better off ...

This best-selling mug has earned over 12,000 five-star ... I would get up literally every three minutes and warm up my cooling coffee in the microwave for 15 seconds. That worked, but it was ...