My dermatologist says I must wear a hat when outside I hate hats as they make me look like a dork....all except this one.  Stylish, smart, a great color...so whats not to like??  One size fits alll because of the clever drawstrings in the band so it can be tight or loose depending on hair style and preference.  The brim can be turned down for more shade and it can be solved up and stuffed in a suitcase so it can go everywhere.  These are durable and stylish - a great combo..