Ive been searching the same dude! They look awesome! A lot of places that i found, such as carls golf land or golf locker were either sold out or only had junior sizes. On titleist website it has those hates listed as "limited" so unfortunately it doesn't seem like they are gonna be super easy to find! Im gonna keep looking though, good luck to you!!

Try golflocker and rockbottom..

Carl's Golfland also has them.

Team Titleist is definitely THE site for hat obsessives!!
JT

Thanks for the info, found on Rock Bottom!