Genius: a cup sleeve that expands via endothermic reaction when the cup is filled with hot liquid, insulating your hot coffee and keeping your hand from getting roasted. Utterly horrifying: the end of this video. [Heatswell]
Genius: a cup sleeve that expands via endothermic reaction when the cup is filled with hot liquid, insulating your hot coffee and keeping your hand from getting roasted. Utterly horrifying: the end of this video. [Heatswell]
Explore more on these topics
Subscribe and interact with our community, get up to date with our customised Newsletters and much more.
