Amaze everyone with this magical mug that features a black exterior decorated with the Elvish 'One Ring' text when cold, but which transforms to display a detailed map of Middle-earth when filled with a hot beverage! A wonderful collectible Item and piece of memorabilia, it holds approximately 18 1/2 ounces and comes in a full-color box. Hand wash only. Not dishwasher safe. Do not microwave.