I'm sold on my Jinglebob's "wild rag"...and have shelved my neck gaiters and other similar gear. When I properly tie it
http://video.aol.com/video-detail/how-to-tie-a-scarf-cowboy-style/2227572649
It truly blocks the wind, traps warmth escaping from my shirt collar, takes up little or no space/weight, and makes me look rugged and western. Dude horses are clearly impressed.