Also known as magic mugs, the color changing mug 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 patented technology has created unlimited new decoration options in the world of coffee mugs. Different from other ceramic color changing mug, this mug is crafted in glass, giving more transparent effect to the image on the mug. Specification Status: on demand Material: glass Heating Method: mug press, 180 ℃, & 15 sec. or so
