I live in the Mojave desert where the solar index is extreme from June through September and you'd rather be hotter under a hat than have your face and neck microwaved.  This is rigid enough not to flap in the breeze but not so hard as to be uncomfortable.  If you wanted to be inconspicuous, this camo pattern is more adapted to the forest than the desert, but it's stylish.  It's got an easy-adjust chinstrap for when the wind is 35 mph and you don't want it swept away.  washable like a shirt.