Perfect if you are often on the go and enjoy your morning coffee hot! Insulated coffee drinkware keeps drinks hot for up to 5 hours or cold for up to 18 hours. They are sized to fit most automobile cup holders. The name thermos is one and the same with, well thermos, the word thermos means insulated drinkware, it's hardly surprising it has remains among the best-selling and highly-rated insulated drinkware available today. A coffee thermos is best for keeping your coffee hot for up to six hours and will keep it warm even after twelve hours.