I believe it's doing the job
Non-woven filter insert believes it's doing the job. Now on the other the mask :(
Two dozen pre-cut nonwoven inserts comprised of 100% extruded meltblown polypropylene. Inserts are thin and lightweight (similar to a tissue) at 30 grams per square meter (GSM). Despite light weight and breathability (breathing resistance of 5.4 mm H20), thanks to an applied electrostatic charge they are tested to a particle filtration efficiency of approximately 80% at 0.3 microns and 95% at 0.6 microns.
NOTES:
Non-woven filter insert believes it's doing the job. Now on the other the mask :(
The insert wants to roll down rather than stay flat. It could be I am at fault. But it is frustrating.
Placing a filter inside the space mask provides assurance that one is doing everything they can to slow the spread of Covid 19.
Like that removable filters are available so masks can be washed. Filters help block dust and pollen when mowing/working outside.
These filters work very well with the masks. Makes me feel like I am double protected. Great quality as well.