PM2.5 Filters that slide into the side of the kid size for extra filtration disposable 5 pack we recommend you throw away 6 hours of consecutive 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 approved. All filters are not returnable.