Jonwrote a review of Arc'teryx Bird Cap on April 17, 2019
Familiarity: I returned this product before using it
This hat is labeled one size fits all, but way too tight for me.. To give you some context, my head is slightly larger than most men, but a L/XL FlexFit hat is too big for me (a M/L is my size in FlexFit but they are not always available.) So given that, I would think a one size fits all hat by Arcteryx would be good to go. Not so much. If you think your head is even slightly larger than average, do not even consider buying this hat. Great materials, though, as expected. It's just a shame that is on the small size and the size is misrepresented.