3dRose mug_92523_2 Hot Air Balloons, Albuquerque, New Mexico Us32 Bba0010 Bill Bachmann Ceramic Mug, 15-Ounce Fill with hot liquid to transform from black to white, magically revealing image White ceramic mug with black outer surface; image printed on both sides Microwave-safe, hand-wash to preserve image A perfect gift for any occasion, Fascinate them every time by revealing a secret or surprise image