I ordered a bunch of new caps at the same time as this one, all being the new unisize thing. The others all fit just fine, and one has very similar construction to this Columbia cap.

This cap has a tendency to rise up above my ears, though. I'd blame it on my particular head if the other caps didn't fit fine.

The construction is very good though. If you don't potentially mind looking like an elf and/or having cold ears, it might work for you too.

I gave 3 stars in the event there's just some fluke with the fit - a benefit of the doubt thing. Most other stuff from Columbia that I've gotten all fit just fine. And the construction does seem good.