a friend of mine who was a real working cowboy in Montana and Wyoming would ride fence weeks at a time on really large ranches gave me a silk scarf one winter while we hunting. I think it's 40x40 and is like a multi-tool for warmth, fold it to a triangle with few rolls, tie it behind the neck and it will keep you warm, raise it up to cover your nose in the wind and dust or wrap you hands in it if your hands get cold. I can testify that it works and when it cold, it's one of the first things I make sure that I have. They're super light, and can serve like camo if your face is too exposed while keeping it warm. And they're inexpensive, fit in virtually any pocket, what's not to like?