As you may have heard: This is Base Layer for your Face Layer! Go ahead, say it, it never gets old. We love it. And we truly love the Ninja Face. It's a low profile, packable life saver. It fits well, keeps you warm while wicking moisture, and comes in a variety of handsome prints. Try wearing it upside down for a real kick in the pants. Gotcha there. No really way to wear it upside down, except if you have a super fatty Schreck foot, this could be a heel-less sock for you.