Brand New! Rae Dunn POLYJUICE POTION double sided mug. This mug features long, black perfect lettering on one side and an image of a bubbling cauldron on the other side. Please see photos for closeup of image. Shiny, white 16 oz. mug with shiny black handle. White interior. Dishwasher safe. May get hot in the microwave. Rae Dunn is created with imperfections and irregularities making each piece unique.