Dust filtering half masks range designed with extreme attention to details to ensure a professional and safe use. The half masks are in compliance with the REUSABILITY requirement for more than one work shift and with the dust clogging test; they are equipped with an inner layer full of specific activated carbon grains and they are suggested to give relief from unpleasant odours deriving from different vapours and exhalations. The half masks fully meet the laboratory tests with excellent results in terms of filtering efficiency and respiratory resistance level well below the limit provided for by standard. In fact, the shape of the half-masks with increased size reduces the breathing resistance thanks to a wider filtering surface and considerably improves comfort. The exhalation valve with a larger surface reduces moisture and heat in the half-mask, granting high comfort during use. The innovative SELF-SET technology allows self-regulation on the face without the help of the internal and external nose. The materials used are durable and prevent collapse in wet environments. The structure is completely metal-free.