Some folks at MIT developed a "body heatsink" a few years back. http://www.wired.com/2013/10/an-ingenious-wristband-that-keeps-your-body-at-the-perfect-temperat

Some folks at MIT developed a "body heatsink" a few years back. http://www.wired.com/2013/10/an-ingenious-wristband-that-keeps-your-body-at-the-perfect-temperature-no-ac-required/ http://www.wired.com/2013/10/an-ingenious-wristband-that-kee...