An Officially Licenced HBO Game of Thrones heat change mug. When this black Targaryen has hot liquid poured in to it, it reveals the Targaryen Sigil the three headed dragon inside the circles and the House name and words “Fire and Blood” inside the square. The band of circles around the top and bottom of the mug also reveal three headed dragons when hot. As the mug cools down it returns to its original state. Approx 11oz