We're debunking the myth now: the majority of your body heat does not escape from your head. Sorry. But that doesn't mean your head won't freeze its follicles off if not covered in cold weather. We recommend the LITE Beanie from Woolpower, an advanced head cover made from a premium blend of superfine 19.5 micron merino wool and polyamide fiber. The 1x1 rib knit fabric is double-layered for optimal insulation, and the high-tech material adapts to your temperature and activity level to keep you warm without overheating. And that's no lie.