FFP2 moulded face mask Polypropylene material Exhalation valve reduces hot air build-up and provides easy breathing in hot and humid environments PP inner with no loose fibres 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