I ordered two of these. The L/XL size had always fit. Not with these caps. Very small, very disappointed. I wanted one for myself and one for my brother-in-law.
We could not get the hat on to wear comfortably. And at 40 bucks a pop. This is way overpriced, but I was willing to put up with it, since it is a unique hat.

You are going to want to order one (possibly two) sizes larger than you normally wear.