the best travel mug you can buy, and we've got the data to back it up. According to our test, the Zojirushi kept coffee hot for five hours longer than the next-best mug and kept ice frozen for an ...

Most hot beverages only stay hot for 30 minutes or so, and if you’re not fast enough, you may find yourself sipping on a room-temperature cup of coffee or tea. If you’re someone who likes to ...