Color Changing Mug – Inner Color

Also known as magic mugs, they can act as an indicator of water temperature. The mug’s body begins to change color when the temperature reaches 40 ℃, and the color will gradually fade away as the water is getting colder. This series of color changing mugs are consistently black for outer wall, and vary among a wide range of vivid colors for inner wall. This patented technology has created unlimited new decoration options in the world of coffee mugs.