Ingineer is exactly right. I told you wrong earlier. I went back to take a look just to be sure, and mine is a 60 cm, not a 59. Again, I'm a 59.5 and it fits me well. I was confusing it with my campdraft which seems to have the opposite problem. It runs a bit bigger. My CD is a 59. I've given my Fed IV several different shapes with the crown and each makes it fit tighter or looser. I've got a few hats that were too big, but with the right crown, it would close in just right.