I was the owner of a Federation III Standard in Carbon Grey from Hats Direct, but ended up selling it to our very own Carter because I thought it was far too big on me. Then, over a year later, I ordered the very last Federation III Deluxe in Dark Brown from Hats Direct since I had more experience with hats and thought the increase in fur felt quality may sway me back to those giant dimensions, but ended up trading it to our very own Carter because I thought it was too big on me. Haha. What did I trade it for? A Federation IV Standard in Carbon Grey with a bit of extra cash to make the trade even. I received it today. Know what I did when I got home? Ordered a Federation IV in Dark Brown. So that's what I think of the Federation IV. My favorite currently produced fedora by far. I like it significantly more than my Akubra Stylemaster and Akubra Sydney. The dimensions are the largest that would work on me, but they work on me.