Expert Quality, lightweight disposable dust mask with carbon filter for protection against welding fumes (fine metal particulates), ozone (produced as a by-product of MIG and TIG welding), organic vapours, fine toxic dust fibres and aqueous mists. The easy breathe single exhalation valve, adjustable nose clip and elasticated straps deliver a contoured comfortable fit for the user, which can be worn under a welding mask/helmet if required. Display packed. Conforms to EN149-FFP2 Specifications