Review on 50 PCS PM 2.5 Filters: Activated Carbon Filter Replacement Pack (50 pcs) by Monica Russell

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 for almost immediate availability! Extremely satisfied!