Hey Cindy! I got your e-mail. After looking everywhere for our measuring tape, and not finding it, lol, I figured out another way to measure the hat! Duh, I feel so dumb, I just got out some butcher's twine - lined the inside of the hat with it, then measured the string!
It came out to 24", but then I put the string around my head and it overlapped about a half an inch, so I'd say 23" just to be safe.
I'm not sure what that measurement is in hat sizes, but there ya go. And remember, if you don't have a measuring tape, just use string!
Cheers! Looking forward to hearing from you soon, sorry it took so long for me to get back to you!
Anthony