Resistant to fluid and synthetic blood penetration at 160 mmHg (exceeds ASTM-F1862). Four-ply protection for greater than 99% BFE and PFE. Exclusive nonwoven antifog cushion across inner layer to greatly reduce fogging of eyewear. Made from nonirritant and odorless materials, these masks are 100% latex-free and fiberglass-free. Ideal for users with sensitive skin.