3dRose mug_92848_1 Organ Mountains, Las Cruces, New Mexico Us32 Ldi0002 Larry Ditto Ceramic Mug, 11-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