This is a GREAT item!  I used it in the Colorado Rockies recently, and when the wind kicked up to 15 to 20 knots, in the low 20s, it kept my ears, neck and head warm.  It's long enough to easily tuck into my jacket and not pull out, eventhough I was very active.  Also, I could easily pull the opening over my chin whan I needed to breathe real hard, and back up to breathe thru when I wanted to.  Love it!