Ion Mug with Charging Coaster is a must for any coffee drinker. I drink coffee twice a day and always had problems with my coffee getting cold before I could finish it with two kids to take care of and doing everyday chores. But now with the Ion Mug with Charging Coaster I always have hot coffee all day long. I would definitely recommend the Ion Mug with Charging Coasterto anyone. Even thinking about buying some for Christmas gifts for all my coffee  drinkers in my family.