The N95 Disposable Respirator Dust Mask with Exhalation Valve is staple-free with a soft, comfortable outer layer and ultrasonically welded latex-free head band. State-of-the-art, electro statically charged filtration media allows for comfortable breathing. Durable double-shell construction resists crushing and provides durability in hot, humid conditions. NIOSH N95 approved. 10 per box. We also offer a 20 per box N95 disposable particulate respirator mask option.