Unique customization method, which allows you to build a WOW campaign. Under a layer of black paint, the promotional message is hidden. It will be revealed when hot liquids are poured into the mug.
The magic mug is also known as a heat changing mug because when filled with a hot liquid, it changes color. This effect is created by using a special oxidized ink. For example, a mug may reveal a picture of the town or monument where it was sold. It may reveal a hidden message or create the full printing only when it is hot.