This Dragon Ball Z Goku Heat-Change Mug and Coaster Gift Set is awesome! Watch the magic heat-activated mug transform before your very eyes as you pour coffee, tea, or another hot beverage inside. As the walls heat up, Goku's orange energy halo and the legendary Shenron will gradually appear! And as an added bonus, a coaster featuring one of Goku's popular symbols is included to keep your counters and tabletops cool and dry. Hand wash only. Not dishwasher safe. Do not microwave.