This Star Wars heat changing mug is sure to cast a bright light over your morning brew. Cold, the mug shows R2-D2 on one side and the Star Wars logo on the other. When hot liquid is poured in, the mug transforms to reveal R2-D2's bright beacon of light shining over the franchise's heroine Princess Leia. On the reverse, the quote "Help me Obi-Wan Kenobi. You're my only hope" is also revealed. Once the drink is finished the mug returns to its original state as it cools. An essential for any Star Wars display.