3dRose mug_194460_3 Keep Calm You're going to be a Grandma - future grandmother text gift - Magic Transforming Mug, 11oz 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 A perfect gift for any occasion. Fascinate them every time by revealing a secret or surprise image A perfect gift for any occasion, fascinate them every time by revealing a secret or surprise image