Laralyn M.wrote a review of Arc'teryx Aperture Chalk Bag - Small on February 11, 2017
Familiarity: I've used it several times
I got this as a second chalk bag for bouldering. It's simple, compact, and keeps everything clean. The only thing negative I have to say about it is this: to close the bag, you need to twist to the left, which is completely counter intuitive. (Righty tighty, lefty loosey, right? In this case, wrong.) I actually thought it was defective until a friend suggested I try twisting the other way. So in summary, excellent chalk bag, just make sure you twist it the right -- err the left way!