Red eyed tree frog on a color changing coffee mug. Magic Mugs make a unique and special gift for friends and family alike...everyone drinks coffee or tea, and the Magic Mug be an instant hit in the office too. We have over 30 different designs to choose from so there will be something for everyone. Simply add hot water to the Magic Mug and watch the design slowly appear as if by magic! Hand wash only, safe for microwave.