FFP2 active carbon moulded face mask Active carbon pre-filter for nuisance organic vapours, welding fumes Exhalation valve reduces hot air build-up and provides easy breathing in hot and humid environments Contour face-seal for performance and comfort Heavy-duty tab-mounted head straps 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