I had bought another model of the same hat in a Medium based on measurements from Goorin's sight, and that I normally wear medium Goorin hats. the medium wasn't even closed to fitting. I ended up giving it to my girlfriend and bought this one in an extra large. Despite what the measurment says don't listen, if you normally wear medium hats from Goorin, Coal, Brixton, Nixon, or Billabong a MEDIUM of this hat WILL NOT FIT go with an EXTRA LARGE.
Plus at little over $20 this hat is a steal.