The hat is advertised as crushable and springs back to shape. The hat came in crushed and it seemed to take set that no amount of adjusting seemed to get the creases our of it. I ordered a large. My head is 23" which is clearly a large. This hat sat on my ears. I did like the color but the hat appeared to be dirty- let's say dusty might be a better word. It looks like it had sat out uncovered. I sent the hat back but I wound up ordering a more expensive hat from their website.