The sweetest little sleuth pals you've ever seen and another spooky mansion for them to conquer together. Pour hot liquid into this Scooby-Doo Cartoon Chibi Pals Heat-Sensitive Morphing Mug and best friends, Shaggy and Scooby-Doo appear. The exterior of this 11 oz. mug transforms from black as hot liquid is added, revealing the hidden image in full vivid colors. Makes a great gift for fans Scooby-Doo. Hand wash only. Not dishwasher safe. Do not microwave.