Great for hiking in the Arizona Sun.

I carry a large Ziploc freezer bag in my backpack. When the sun, heat and wind become almost unbearable, I'll pack this Balaclava into the bag, pour water into the bag to saturate it and, wear the Balaclava.

What a feeling !!!  I can no longer feel the hot sun on my face, the evaporating water cools my skin temperature down and, yeah, you may look a ninja in the Arizona desert but, you won't be dropping from sun/heat stroke like everyone else at 115F temperatures :-P