The magic of this Houdini Mug will surprise you! When a hot beverage is poured into this magical mug, Houdini vanishes and handcuffs disappear. There are four classic posters from Harry Houdini's career displayed on this mug. Escape into the magic of Harry Houdini! A great gift for those who love a little magic! Holds 12 oz. Disappearing mugs are not dishwasher safe.