Stainless mugs tend to be insulated ... Brands also vary in whether they include built-in batteries. Most, however, come with a charging pad that extends the time your drink stays at the desired ...

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 ...