fangtian n95 mask niosh certified particulate respirators protective face mask (pack of 10, model ft-n040 / approval number tc-84a-7861) fangtian niosh approved n95 certified for at least 95 percent filtration efficiency against certain non-oil based particles.<br> adjustable nose clip helps in obtaining a secure seal.<br> durable latex-free material to ensure your wearing comfort.<br> advanced electrostatic media is designed for ease of breathing.<br> compatible with a variety of protective eyewear and hearing protection