May be used when FDA-cleared masks are unavailable Machine washable, 5 masks per pack, Non-returnable 500 units per case (100 inner poly bags with 5 units each = 500) 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. The product has not been FDA cleared or approved. The product has been authorized by FDA under an EUA for use by HCP as PPE to help prevent the spread of infection or illness in healthcare settings and by the general public to help slow the spread of the virus during the COVID-19 pandemic.