[This review was collected as part of a promotion.] I used this during a 1/2 marathon which was in 30-35 degree weather. Multiple people commented on how my hair didn't even look sweaty when I was done. It's because this little gem wicked ALL of the sweat away. It kept my ears super warm, and never felt wet or gross even though it soaked up everything. I'm a fairly sweaty person and this thing is magic.
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