• Anti-fog Surgical Masks are designed to create a seal between the mask and user's face to prevent fogging. • Technology in the form of adhesive, foam or film keeps condensation from escaping out the top of the mask, thus preventing eyeglasses from fogging and ensuring optical clarity. • Cellulose inner facings create a non-irritating and soft feeling, leaving the wearer cool and comfortable. • BFE > 98%, PFE > 97%