Enjoy your morning coffee with everyone's favourite astromech droid, R2-D2. When cold, this eye-catching heat changing mug shows black spaces in front of a deep blue circuit board style background. C-3PO's quote "R2-D2 where are you?" is shown on the reverse. When hot liquid is poured into the mug, C-3PO's question is answered as the design transforms to reveal brilliant character art of R2-D2 where the black spaces were, and the dark background turns white. The mug returns to it's original state when it cools. This mug, like R2-D2 himself, is full of surprises, and is a lovely gift for any Star Wars fan.