Dro-Med Medical N95. 20 pcs per box. Suitable for a single 8-hour use against solid & water based liquid aerosols, that do not contain oil, Protection against inhalation of dangerous particulates in high dust areas, An ergonomic design that provides a comfortable and secure fit for different facial sizes, A welded elastic strap along with the half face seal foam reinforces the seal with the lowest leakage,Lightweight with low breathing resistance for increased wearer comfort.