I looked at the Columbia size chart on their site.  This shirt is a bit bigger than the chart indicated it would be.  It would even be a bit large on my husband.  I can make it work.  I bought it for functionality rather than fashion.  If I buy another, I will buy a small.  I am a woman, but bought the men's shirt as the women's line seems to think we all want pastels and bright colors.  I was hoping for the same features as the women's version of the Tamiami, snaps and awesome zipper pockets.  This shirt is vastly different from the same named shirt in the women's line.  I DO love the color.  The fit and features are ok.  Sun protection is paramount for me.  It is still nearly as cool as going sleeveless, which is awesome for hot summer days when I don't want to put on sunscreen and wait half an hour just for a quick jaunt outside.