FYI this week (through the end of May) there's a flomask sale -- 15% off sitewide with KEVSTURNING45 as the code. I have one--I like it a lot and it has held up better to my dings-and-dents style of taking care of my things than the envomask did (aka: i, a clumsy person, accidentally broke each part of the envomask through mostly normal use and wear, so i replaced it with a flomask which has stood up much better to being banged around my bag and belongings). There's n99 and n95 options for filters and i find the n99 comfy enough to use regularly.
I find it easier to wear for long periods of time than a disposable, and I do get a good seal out of it, but of course your face may vary. If you're in Seattle and want to meet up in a park or something and try mine on lemme know!