Sony has invented a product called the Reon Pocket. It is a device that can change a user's personal temperature (or their perception of it, at least) while worn on the body. This unusual product is currently a part of the OEM's crowdfunded First Flight project, by which its chances of manufacture is determined by its ability to attract backers.
https://www.notebookcheck.net/Sony-puts-a-personal-wearable-air-conditioner-up-for-crowdfunding.428554.0.html