
I like the opacity of these masks. I contacted them when the filti I usually order were out of stock. They use the same nanofiber technology or whatever you want to say. I'm frustrated that I've used 11 so far and 4 of them were empty or didn't seal properly so the mask is loose at the bottom and that's why the mask doesn't fit, so I've lost 4 masks. I almost feel a suction as I breathe in, so I know they fit my face just right. They are not all in your mouth like other masks. I will for sure order more. This is not kf84, but another technology. I downloaded a file showing how filtered they are (NPPTL International Respirator Rating and another file I don't remember the name of) and was surprised which is why I got it. I wish I didn't have to empty but things happen. They were sealed blank at the factory so it's an accident. The rest seems ok. In general I am satisfied and very happy that they are individually wrapped.

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