The Positive Facial Lock (PFL) N-95 Particulate Respirator meets the World Health Organization (WHO) and the Centers for Disease Control (CDC) recommended protection levels (where applicable) for many airborne contaminants. NIOSH Certified, our N-95 delivers the appropriate amount of filtration efficiency and when combined with a trio of patented and unique design features, also delivers the user a comfortable, custom fitting facemask. The integrated Magic Arch technology creates a breathing chamber within the facemask by holding it away from the user's nose and mouth. Our PFL technology, incorporating an integrated Twist Seal chinpiece, helps the wearer create a perfect fit every time.