Scan FFP2 Premier Valved Odour Disposable Masks have active carbon cover pre-filters, which protect lungs against organic vapour and gas below the Occupational Exposure Limits. Designed to cover the nose, mouth and chin. The construction is made of the filter material itself, and the exhalation valve allows for easy breathing. They are flat folding for easy pocket storage. The masks have elasticated retaining straps to keep them securely in place. In addition they have an adjustable nose clip and soft foam nose piece for custom fitting. Resistance to clogging. These masks have passed the optional Dolomite clogging test, giving the user better breathing resistance for longer. To be disposed of after each period of work or 4 hour shift.