David Thielwrote a review of Arc'teryx Poco Cap on June 23, 2015
Familiarity: I've used it once or twice and have initial impressions
This hat is not at all what I expected, and I haven't decided yet that it will be a daily use item, but I think that it is so different from other hats that it's very likely to be very useful in certain situations.
Some key things that set it apart:
-- It is physically very small -- so small you could fit it in the front pocket of your jeans. That seems useful to me for leaving it in a bag for "just in case" or for using it when I'm really traveling light. Really: it's tiny.
-- The brim is quite short. For video/photo work, this is really helpful to me since it allows me to lean into the camera without hitting microphones, flash units etc, that stick off the top of the camera. (Or when I'm using a bigger camera, it prevents me from hitting the camera itself...)
-- The material is ultralight and I suspect very quick to dry. The top of the hat is mesh, so it is cooler than your standard cap. It's also a relatively shallow cap, so again that makes it a little cooler.
I wear a cap to keep rain off my glasses and to shade my face from the sun. The Poco is a solid performer in this regard, while at the same time representing a minimalist option.