50 PCS PM 2.5 Filters: Activated Carbon Filter Replacement Pack (50 pcs) Review

Product arrived 4 days earlier than stated. Mine came in a plastic bag sealed with little pockets inside. There were 5 filters in each bag that were connected together so all I had to do was rip them off.

Invalid number of photos. The quality is very poor, the front lining is the same as the back lining and the same color. Custom PM2.5 filters. If you are looking for pollutant filters with the same quality as in Asia, then this is not the right product.

I definitely feel the difference when I wear them. I'm a core worker and we don't have PPE so I bought it to be safe and to use with my cotton masks. They make breathing a little more difficult, but not impossible, and my oxygen is the same. I would have preferred it to be a bit stuffier and I would have assessed my risk better.

Excellent quality filter. Arrived quickly, packaged securely, each individual cartridge has approximately 4 attached filters that can be easily torn off without damaging the integrity of the filter. We've used them with some face masks purchased on Etsy. They fit comfortably on a child and small face mask and are a bit small for a medium/large face mask but cover the nose and mouth area just enough. I recommend and will buy again.

Just received, just wanted to leave a review to add later: Packaging: good. Filters are supplied in reusable bags in packs of 5 layers: this is 5 layers according to the product description. In the section, two outer thin "cloth" layers are visible, followed by two thicker filters and a black layer in the middle (assuming it's real coal). Airflow seems adequate, but actual use case will follow an updated review.

Holding it close to your mouth with no gaps and trying to breathe is like trying to breathe through a plastic bag. The air that I breathe in and out through the mask does not go through this filter in any way, it just flows down the sides and out of the cloth mask. It has five layers. The black and non-woven layers could be stacked on top of each other and breathed easily. But add two layers of melted plastic and that's where the airflow stops. Can anyone tell me how the air should flow through

I received the item a week earlier than Revain expected. They are exactly as expected - the same thickness as the 2.5PM filters that came with some commercial sheet masks I've ordered elsewhere - not too thick, easy to breathe, but thick enough seems declared layers to have been. The nice thing is that the filters are individually packed in groups of 5 in a main Ziploc pack - I like to have a few extras in my purse or car, it makes things that much easier. The unit price was excellent; lowest…