Another plug for the UA hood.
I've been riding for 20 years and have tried just about every version of face masks ever made. The worst, w/o a doubt is a bandanna. They freeze, move around, come untucked, and don't really work. They are basically just for goobers who are all down with the fashion tip.
IMHO, the UA hood is the best face mask I've come across. If you ain't down with being a ninja, then fine. Then you can just get this
. I've never seen them in person before, but it looks to just a 1/2 version of their hood.