PM2.5 Filters that slide into the side of one size fits most and adult masks for extra filtration.
we recommend you throw away after 6 hours of use
LEGAL DISCLAIMER: Top Trenz PM2.5 filters are FOR GENERAL PUBLIC USE ONLY and are NOT intended for medical or healthcare workers, and should not be confused with N95 respirators or other personal protective equipment (PPE). No warranties, either express or implied, are being made that these filters prevent infection or the transmission of viruses or diseases. These are not reviewed and not FDA or CSA approved for medical use. All filters are not returnable.