The gaiter-style ones? I bought a handful of them at a rave supply store not too far from me back in March, and it's pretty much what I've been using as a facial covering since then. Even after the pandemic is over, I might keep one in my golf bag to wear during sand shots.
I have a few KN-95 (I think? that's the term. Maybe I have something else) in case I need to go into somewhere crowded, but I haven't used them yet.
The rave masks I have are cloth but washable, they work well for the usual uses but when I'm playing golf, I'll wander away from the group and remove mine for a few minutes when I can. They're pretty much gaiter ones.
I recently ordered more gaiter-style from woot (polyester spandex, but they haven't come in yet so I can't compare them). Still... five for $26.50 is such a good deal I might consider getting another few.