https://www.cnet.com/news/2018-winter-olympics-team-usa-heated-jacket-ralph-lauren/ >It doesn't beep or light up. There's no buzzing or distracting alerts. It doesn't even feel like you're wearing a gadget. It's just smarts woven into your clothes. >The heated panel is made up of conductive inks, bonded to the inside lining on the back of the jacket. It's thin and flexible, and can be crumpled and washed.