This cap fit a 23 1/4 inch head without looking too remarkably "goofy." It was purchased to use in a short video and for the reasonably low price it did the job nicely. I would not recommend the hat for any really serious enterprise as the fabric is not very thick, nor ar the tie-strings. For the price, it's a fair hat.
If you are looking for a cheap Sherlock Holmes hat, this is fine. Cheap and does the job. Not something you would wear out in public anytime other than Halloween or if you are 7 years old and love Sherlock Holmes.
Why's it always the hat photograph? What kind of hat is it anyway? Is it a cap? Why's it got two fronts? How are you going to stalk deer with a hat? Are you going to throw it? Some kind of death frisbee? ...It's got flaps! Ear flaps! It's an ear hat, John!(But in all seriousness, this served its purpose as a gag gift for my friends who also watch the BBC's "Sherlock," but nothing more. It's small, flimsy, and it slips. Still, it was good for a few laughs.)