Based on the responses in a previous thread, I bought these 3M daily face masks. Like my review says in that thread, they’re fine. Not magically comfortable, but they fit my needs, and are good for 30+ minutes in a store situations. I also use one at work for when I’m in common parts of the building, so on and off throughout the day.
Since that thread, I bought another 10 pack of them, so I can keep a spare at work, in all vehicles, and still have plenty to get through a week or two of use between washes.
I also bought some KN95 masks from ProjectN95 and I wear those at the hospital or other places I’m likely to be around sick people.
They’re the pyramid type ones, and are pretty comfortable to wear for hours at a time.
“Comfortable” is, of course, all relative. I might not be bothered by something that annoys you.