I wonder no one has ever had a thought to create such thing? Of course I don't know whether it's feasible or not. Well, most baseball caps apply adjustable strap / to adjust the wearer's hat size. Why no similar device ever applied in fedora? This way, problem concerning "lack of big size" can be better handled, right?
If any of you hatter manage to create it, though, better patent register it of course
If any of you hatter manage to create it, though, better patent register it of course