Australian brand MERTRA is preparing to introduce a unique all-weather solution - Heat Reactive Puffer Jacket. It changes color when exposed to heat or water. When the jacket gets wet, such as raindrops, the color of the fabric can change from light to dark. The heat of your hands, on the other hand, leaves brightly colored patterns. The jacket is scheduled for release on November 29 on the brand's official website. Additional details and pricing for the Heat Reactive Puffer Jacket will be released there as well