A warm beverage is an essential dawn patrol item. With these insulated coffee mugs, you can ensure that your drink of choice ...

Are vacuum-insulated mugs safe to use ... For this piece, she used editor-tested insights and her research on top-rated travel coffee mugs. Dillon Evans contributed to this article.

So take note of each mug's rated battery life ... and in fact many insulated non-self-heating travel mugs can keep coffee warm for just as long — for a fraction of the price.

Over the last decade alone, the pros in the Good Housekeeping Institute Kitchen Appliances and Innovation Lab have tested almost 100 different travel mugs ... insulated mug (which keeps coffee ...

It's amazing how quickly a cup of coffee can go from "elixir of life, savior of mornings" to "undrinkable tepid swill." But that's exactly what happens if you step away from your mug for just a ...