Actually, you can get American-made N95, NIOSH-certified 5 layer masks easily on Amazon. I use those made by Kimberly-Clark, the maker of Kleenex (actually, from their research division KimTech). Just great engineering. They are almost the same as medical-grade N95 masks, except that they do not have the splash/spray protection sixth layer. They are very comfortable, and do not get as hot as surgicals or cloth masks. In fact, they literally feel like you're wearing nothing at all, and provide very good protection. I am quite comfortable wearing them in Texas or on airplanes.
They do have three downsides:
1) they are "duck-bill" style, with the center fold running sideways, not vertically, so basically they look funny, but they are used by many employers. (Actually, I just realized that if you're going to wear duckbills, it might as well be in Donald's house.
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2) like all effective N95 masks, they have straps that loop around the back of your head, rather than around your ears. Otherwise they can't achieve the complete seal required for N95 certification. But their straps are very lightweight wide flat bands, rather than round cords, so they don't cut into your skin. Some people find the straps so comfortable they complain that the straps aren't strong enough, but I've used hundreds and only had one set break on me. Others think the straps aren't tight enough, but you can see the material bend in and out when you breathe, and if you perform the usual standard fit tests, they fit fine without cutting in. Again, good design and engineering, not brute force, one-size fits all elastic cords.
3) they are about twice the price of surgical masks. I just checked on Amazon and they are $1.09 per mask, down 11 cents from when I re-ordered them a couple of weeks ago. They used to be significantly cheaper, but more people have been buying them, pushing the price up. But, as with most quality masks, you can let them air out for several days, preferably in sunlight, and they can be re-used if needed.
