KN95 Face Mask 50 Pcs Disposable Respirator 5-Ply Layer | GB2626-2019 Compliant

I always read reviews before ordering and was concerned when I read that the black masks are not the same quality as the white ones from this brand and have less layers but decided to order anyway since I know there tends to always be negative reviews for most product and I liked the white ones I got during COVID ( this brand was recommended by a former nurse).Well it turns out these are exactly the same in size, design and materials. I dissected one and yes there are 5 layers, very thin but 5 layers they are. Also took apart a white one and the layers are just as thin.Perhaps some folks got something different from a different seller? Anyway all good in my case.

Easier to breath than any other mask I've used. I wore these every day, at work x 3 years (office nurse, required). I now have to wear again due to severe allergies to scents.

I've never written a product review before, but I figure I would share what I found online. I bought 2 boxes of these on blind faith and some good reviews on Amazon. Usually, I do more research, but could not find much online with respect to these being good at filtering particles/viruses. The boxes I received are marked as model KF-A F04. Although Kingfa has products listed on the FDA website as approved for use in the US under the EUA, those are for models: KF-A F01 and KF-A F10(SC).I recently found a website claiming that MIT, amongst others, is testing Chinese KN95 masks and posting results to the Massachusetts Department of Public Health’s website for PPE guidance. I looked on the MA website and found a page titled "Personal Protective Equipment (PPE) During COVID-19." On this page there is a document link titled "KN95 Respirator Test Results." After searching through this, I found what appears to be the same King Fa box I received although the document does not list an exact model number. Assuming this is indeed the same model, the filtration efficiency is listed as 87.4%. I will caveat this, as the MA site did, by saying that this is not a NIOSH-certified laboratory doing the testing, but they are trying to follow the same testing methodologies.There were a great number of other "KN95" masks in this document that tested lower (sometimes 50% or less). Perhaps this did not reach the 95% threshold, but I feel pretty good about 87+% filtration in a world where I might otherwise be wearing a facemask that would likely score lower on such a test. Additionally, these were some of the lower-priced KN95 masks available when I bought so I feel good about my purchase.Random final thoughts:1) I have not actually used these yet, but just tried them on. I can't comment on their durability or comfort.2) These masks fit me and I'm a pretty big adult. They also fit my 10-year-old son fairly well. He stands 5 ft and weighs about 100 lbs. I did add some tension to the straps behind his head with a plastic hook to try to eliminate gaps.3) A nice bonus is that the box came with these plastic hooks in it. They appear to be similar in quality to others I have paid for that work well with my children's masks, but I can't speak to the durability of these.

If you’re among the many who’ve spent much of the last few years searching for “real” N- and/or KN95’s (and couldn’t help but wonder if what arrived in the mail from Amazon or elsewhere was actually doing you or your loved ones any good), then read on…In case you haven’t already heard, a healthy percentage of the masks bearing the “KN95” imprint actually don’t meet that criteria, and here’s why. this “In the best of all possible worlds”, an N95 or KN95 mask has 5 layers from front to back, with the inner and outer surface plies there primarily to keep larger particles out (or in) and to be relatively comfortable against the skin. It’s the densest, waxiest-looking, most opaque layers, #2 and 4, that do the real heavy lifting, by keeping particles larger than 2.5 microns wide from gettin into our lungs (or, if we’re ill, from getting into the lungs of those closest to us. Remarkably enough, these two plies look and feel EXACTLY like Gore-Tex fabric, which just happens to filter out water droplets around those sizes…) The fluffy ply in the middle, #3, is mainly there to keep those waxy-looking plies from sticking together, once they’re moistened by our breath. Unfortunately, the only way you can tell if you’ve been honored or screwed at the checkout is by cutting the first mask in a package apart, as you can see I’ve done, here.In about a half dozen of the cases of N95’s and KN95’s that I’ve bought since December of 2019, one of those waxy, opaque layers has been missing, and in one case, both of them were! Thankfully, this isn’t true of these “KINGFA” masks, which I’m happy to report do contain all of the necessary layers. For me, that’s a really big deal because I’m a licensed massage therapist — which means that several times a day, I’m stuck in a small room with another human being for a minimum of an hour at a time, and if either of us has just spent time with someone who’ll test positive for Covid tomorrow morning, we had both better have something protecting us now, and these masks appear to fit the bill.

I decided that I can't keep hiding away in my home because I'm well I used to be deadly afraid of covid. I bought this around the start of this year because I got a job that forces me out in the world and around people.The mask are pretty lightweight, they fit my face, the quality is amazing I haven't been sick at all this year, they are also very easy to use. They're very elastic when there old and I need to throw them away, I rip the elastic off and turn them into hair ties.