I'm a Triathlete who lives in the Arizona desert and looking for a cool hat to keep the sun and sweat off my head and face when on my early morning runs.  I absolutley love this hat. The mesh top allows air and my head to cool and the sweat band sucks up most of the water to keep it out of my eyes. A couple of reviews said this hat was small but, I have a larger size men's head 9 1/4 and this hat fit me perfect right out of the bag it came in. Pleanty of adjustment if need be. Great hat for runners in the desert heat!  I'll take two more for spares at this price!!!