This is a hat pattern that I've used before. It works well, but unfortunately, the measurements aren't exact. I lost my hat-
Oh. Holy crap...
I just found my hat, which I've been looking for for a few months. (And what a convenient time!
Ends up the measurements really ARE pretty exact...
Yes. So anyway, it works well, and looks good. If you want it to look even better, do an "invisible" hand hem (can't remember the exact term for this, if there is one...) around the bottom because it makes it look cleaner.
If you have any questions, just comment and I'll reply as soon as I can.
Now, if I could find my camera, I'd post pictures...
... Guess not.