Inflatable creative cup that can bloom flowers

There is nothing special about this water cup on the surface, but when hot water is poured into the cup, flowers will bloom on the outside of the cup. The principle is that the inside of the cup sleeve is filled with some materials that expand when heated. When hot water is poured in, the pattern on the cup sleeve will expand. This can not only increase the distance between your fingers and the cup wall to prevent hand burns, but also increase friction to prevent the water cup from accidentally slipping. Although the inflated creative cup that can bloom flowers is nothing special, its fleeting beauty is still impressive.

< p>A water cup that can bloom flowers

A water cup that can bloom flowers (2)