Couldn't find a size to comfortably fit my head so I went larger with adding inside band filler. Dorfman Pacific was great for returns,letting me find my size. You can sit on this hat,smash it,or crumple it up in a ball,and it keeps it's shape,yes really! I had a custom hat band made to fit my style. It looks great and feels very comfortable. Please take any custom hat band off before testing the crush theory.