We have a triple layer filter that inserts quickly and easily into your mask. Our filter material is purchased from a company that is Government approved.
Our filters have an outer layer of HR - a hydrophobic spunbond material that repels droplet penetration and aides particle filtration.
A middle layer of PM100 - needled binder-bond - for particle filtration and a final layer again of HR - a hydrophobic spun-bound material that repels droplet penetration and aides particle filtration.
The manufacturer of the materials used recommends replacing the filter after 8 hours of use.
If using it for less, remove from mask before washing either. Wash filter separately from mask in hot water and allow to dry. Do not iron. Be sure to replace after 8 hours of use.