Granted I bought this for combining wiht my Balaclava for mountain biking, but it in itself is pretty good, could wear it alone if the ear coverage was better.  I have a big head and this thing is pretty comfortable, little hard to move full range of motion but its new yet.  If you ride a bike and have a balaclava, you know the headache of glasses getting fogged cause your breathe exhaust goes right up around your nose.  I cut a mouth whole in my balaclava and wear this underneath and OMG WARMTH AND NO FOGGING BS ANYMORE.  This thing alone probably be great with a skull cap too.