Neck, chin and mouth, nose... cover up as much as you want for just the same amount of warmth. This magic material manages not to soak up water when it's raining or snowing. They even can cover my ears!
It also stretches when needed but doesn't stay stretched out. When I got my wisdom teeth removed, I ended up using this to help hold the ice on my jaw for about two weeks. When I no longer had the extra ice packs, it still went back to fitting me just as snugly as it did when I first got it.
Love the fabric's soft texture and actually want to go get it and wear it now, just writing about it!