3dRose mug_84308_3 Mourning Dove, Bird, Rio Grande Valley, Texas Na02 Rnu0194 Rolf Nussbaumer Magic Transforming 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