Waaaaay too small.
Firstly, this thing arrived less than 24 hours after order, even though free delivery was requested. Amazing customer service by Heinnie once again! Unfortunately things went downhill from there. I opened this hat and it felt really good quality as with all 5.11 products. So you can imagine my disappointment when I placed it on my (admittedly large) head and it didn't even cover the tops of my ears. Tried stretching it a bit but there was no give. I presented it to my girlfriend as a 'gift' and it wouldn't even fit her. And she has a tiny head. Never mind, if we ever have a baby we might get a few months use out of it.