nextirrer niosh certified n95 respirator mask - pack of 20 mask nextirrer the l-188 n95 particulate respirator mask is foldable and easy to store and can adapt well to the wearer’s facial features. <br><br>the n95 head strap face mask is niosh certified and so functionalities such as penetration, breathing resistance and strap strength meets the standards set by niosh.<br><br> as per niosh standards, n95 approved masks filters at least 95% of particles at a particle size of 0.3 micron. <br><br>the respirator comes with a padded nose-piece offering perfect fit and a latex-free elastic headband reducing discomfort.