Preheat a heat-sensitive coffee cup that changes its shape, a coffee cup of creative design.

This is the Heatswell thermal coffee cup brought by ScottAmron. The middle part of the cup (the blue part in the picture) is something similar to thermal paper. At room temperature, there is almost no difference between this cup and an ordinary paper cup in terms of thickness and weight, but once hot liquids, such as hot coffee, hot water and hot chocolate are poured in, the blue part expands incredibly rapidly in just 2 or 3 seconds. Into a variety of pre-set three-dimensional shapes-can be product logo, but also can be animals, scenery, text and other patterns.