PM2.5 N95 Activated Carbon Filter Insert 5 Layers Protective Filter (20 Pack)

They say they have 5 layers as shown on picture however they DO NOT have 5 layers in fact only 3 VERY misleading. My daughter who has CF (cystic fibrosis) needs these and well.... I'm disappointed!

Seems to be working good for my son who has a new job working with fiberglass. 2 weeks into the job his asthma(which hasn't bothered him in 8 years) acted up. After 1 night using the mask and this filter he has not had another asthma issues.

OK --but, poorly made to assist the removal of organic vapors.

I bought these for replacement filters. Fit perfectly

These fit my mask with no problems.

If you have a Pet Safe Water Fountain these Filters, fit the same as the original. Worth every penny!

So thin that I inadvertantly put two into the mask.

It arrived the next day. It fits my mask perfectly.

Es la primera vez que utilizo estos filtros para cubrebocas y son excelentes. Me animé a comprarlos por la contingencia ambiental aue hay en ciudad de México.Noté un gran cambio en mi respiración al usarlos, ha sido una buena inversión.