Add a magical touch to every coffee or tea break with our Custom Magic Mug. This heat-sensitive ceramic mug looks like a regular black mug when cold, but when filled with a hot beverage, it reveals your personalized photo, logo, or message. It’s perfect for gifts, corporate branding, promotional giveaways, birthdays, anniversaries, and special occasions. The heat-sensitive coating hides the design when cool and reveals it again with hot liquid.