FFP2 breathing protection foldable mask Seamless 5mm headbands and non-allergen sponge for comfortable secure fit Ambient air must contain a minimum of 19,5% oxygen by volume for proper use Provides lower level protection against solid, liquid aerosols and smoke containing the following materials: Calcium carbonate, china clay, cement, cellulose sulphur, cotton, flour, carbon, ferrous metals, hardwood, glass fibres, plastic, vegetable oils, quarts, copper, aluminium, bacteria, fungi, mycobacterium tuberculosis Do not use in explosive atmospheres or for firefighting Do not use with Beards or other facial hair that may make contact with the face and the product which will alter the intended seal. Time use limitation: Replace when the mask becomes dirty, damaged, or difficult to breath through