@dan613 @michael @trendless @ProjectN95@mastodon.social

Good question. First to say, it's not claiming to be certified. The material in the filter is excellent, they have data on their website showing ASTM level 2/3 performance (tested by the medical mask standard - which is a flat material standard). I have one, the silicone seal is comfortable and well designed, makes a good seal on my N-of-1 face.

The material is good and subjectively, fit is good. It's comfortable. It can be worn with the straps overhead or earloops - I'd recommend overhead. I'd predict when worn on overhead elastic that it would perform in the same range, on a human, as a non-fit-tested N95/FFP3:

https://maskevidence.org/mask-types

I can't fit test it on a human without destroying it, and I would need several to test on different people.