The mugs come in a couple different sizes and an ever-changing variety of attractive, limited edition glazes, all of them ...

We tested the 12-ounce version ... The smaller sizes look more like camp coffee mugs and don’t fit in a cup holder, but the 20-oz version’s handle sits higher, so the mug fits perfectly.

Novelty Coffee Mug: Automatic heated coffee cup is made of food grade 304 stainless steel and PP. 350ml /12 oz Coffee Mug Warmer for mixing hot or cool drinks. You will get 1 coffee cup with lid ...