Particulate Filtration Efficiency: 95% CA-N95F-175 This highly breathable flat fold earl loop disposable respirator mask also has ASTM Level 3 surgical mask rating. has authorized it as a 95PFE Surgical Respirator Adult Standard Size 5 Layer (KN95 Style) Face Mask Respirators are in for superior comfort and protection. This added value of assembly is not only visible in the high-quality construction of these masks; you will be confident knowing you are protecting yourself and others with genuine lab-tested products and a rigorous manufacturing process. FEATURES: Hypoallergenic, no Latex and no Graphene Manufactured in Clean Room Disposable Superior protection around the face and mouth with a fitted design that blocks airborne pathogens Anti-fog Earl loops Convenient and comfortable for daily wear White Colour Bi-fold Design Individually wrapped for extra protection 20 masks per box Ideal use: Medical and casual use, indoors and outdoors. 5-layer construction 5-layer:2 non-woven outer layers, 2 melt-blown inner filter, 1 non-woven cotton middle layer. Earl loop design with metal nose bridge. Fits most adults and teenagers12+