https://www.yahoo.com/lifestyle/neck-gaiters-may-actually-increase-covid-19-transmission-study-finds-183034882.html?.tsrc=daily_mail&uh_test=2_06 I think the gaiter mask they tested in this case was a very thin spandex-type material. I've seen gaitor-style masks available in many different materials. You are probably right, but the thin spandex material one is easily the most common. That’s what the MLB players wear, police officers seem to wear them a lot, and many other people are using those thin ones. They seem to be, by far, the fashionable selection for many. It should be noted the study was purely for how those masks stopped transmission to others...not how they protect you. The N95 valved is middle of the pack for that reason, but is no worse than a non valved when it comes to protecting you.