Thanks to @npub1vjus...8ulw 's awesome #pandemic newsletter, I discovered #flomask. This is like the Rolls Royce of #covid #masks. They have sizes based on different face shapes. They've actually tested the masks and report performance numbers. You can get replacement parts You can zhuzh it up with different straps and decorations It's expensive ($90 for the mask, $60 for 50 filters). But this is like buy it once and use it for the rest of your life. flomask.com