Gave this as a Christmas gift to a friend who would always complain about his coffee not being hot enough, even fresh from the coffee shop.

Now with his Ember Travel Mug, he says it's like a miracle every day.  He is no longer constantly reheating his coffee in the microwave and so it tastes better too! He says it could even be a bit hotter than even on the max setting, but it's still hot enough so he doesn't feel the need to heat it up more. He is not one to wax overly enthusiastic about much, but he was uncharacteristically elated with this mug!