Designed for maximum comfort, the Port Authority® Cotton Knit Face Mask goes beyond standard cotton masks thanks to our partnership with Sciessent, a U.S.-based global provider of antimicrobial solutions, to incorporate its Agion® treatment into the fabric. Learn more about Sciessent. This three-ply, 100% cotton jersey face mask covers the wearer¿s nose and mouth. Elastic stretch binding ear loops help hold it comfortably in place. Three-ply 100% cotton jersey Fabric touching skin: 100% cotton Mask contains silver and copper Three evenly-spaced pleats on each side May be used when FDA-cleared masks are unavailable Machine washable 500 units per case. 100 inner poly bags of 5 units each. Must be purchased as a case Non-returnable Not recommended for use in a surgical setting or where significant exposure to liquid, bodily or other hazardous fluids may be expected and where the infection risk level through inhalation exposure is high.