Protect yourself and others while at work or out and about by wearing one of our KN95 4-layer face masks. Constructed with a layer of 25gsm NWPP, 25gsm meltblown, a second layer of 25gsm NWPP and one layer of 45gsm filter sponge, these masks have a comfortable over-the-ear fit with soft elastic ear loops. The form fitting nose strip keeps out pollutants and allergens and keeps others safe from sneezes. Each pack has 25 masks. These disposable masks are not certified for medical use.