Adult Activated Carbon Filter 5 Layers Replaceable Anti Haze Filter Paper (100PCS)

These are 5 layers even though they look thin they are well made. I don’t really go anywhere so on filter last me about 2 weeks. But I go to the store once a week. The masks I ordered require a filter and these fit perfectly in them. Glad I have them handy.

I got these for my masks. They have a slot made just for these N95 filters. I like the quality of filters. The only thing I think could be better is if ther were a bit longer and a bit wider. The filter only cover your mouth and part of you nose, or your nose and part of your mouth. If the filters were a bit wider and longer in length, they would fit my masks like a glove. And I have a few different types of masks. So it’s not like I only have one mask. All the masks have the same thing, slots for the filters. And the filters need to be bigger.However, they are of great quality, and they are easy to breathe through.

I've been looking for filters to insert into my mask and only found fake or bad reviews. Took a chance and ordered these based on the reviews and buyer experience. Yes these are real. They are five-layered filters for a good price. If you are looking for PM 2.5 filters buy these.

Short live Covid-19, meanwhile I'm doing anything I can to survive. This little filter not only fit perfectly into our hand made masks but actually made it easier to breathe too (at least for my wife and me). I'm working from home but my wife was working at a retail store dealing with customers on a daily basis. Social distancing isn't always posible and the multiple layers of protection helped protect her until she was able to get a "safer" job.

MADE IN CHINA..IF I KNEW THAT I WOULD NOT HAVE BOUGHT THEM.

This is definitely a dense filter. So much so, that pressed directly against my open mouth, with attempts to inhale as much air as possible, I was unable to obtain enough oxygen to survive on. Using them in a mask just forces air to come in and out around the edges of the mask. Utterly useless.For additional context, I'm a healthy adult with no issues that affect breathing.

These are not N95 - but they make me feel a little better. If you masks have a slot for filters, these work. I've tried lots of stuff - folded paper towels, hepa filters for machines (cutting them my hand)... etc... these are just easier. One time use - must be replaced each time! Remember - don't touch the outside of your mask without washing your hands - you have to consider the outside of your mask as diseased - for real. And remember to wash your hands after removing filters and placing your reusable masks in the wash! If we stick together, we ARE going to get through this!

These are among the thickest filters I've seen for masks, so I assume they do a good job of keeping things out for the area that is covered*. Unfortunately, for the two masks that I have, the filters aren't tall enough. In the attached photo, you'll see that while it's even with the bottom, a portion of the "nose" of the mask isn't covered by the filter. When I put the filter inside of the mask, the coverage is slightly less than what I was able to show in the photo.