More breathable than almost any other ADF9200T face mask. First ADF9200T certified respirator masks manufactured in South Africa. Trusted by medical professionals world-wide Nano-filter filters out 99.66% of airborne particles as tested by VICLAB (BSI) 17.7.20 (compared to approximately 60% for many imported masks) Bacterial Filtration Efficiency (BFE) ≥99.92% AS 4381 Level 3 5 protective layers to help protect you from airborne particulates Cutting-edge nanotechnology, to make them light and breathable Nano-tech Particulate ADF9200T Respirator features advanced filtering and design details that allow them to be worn comfortably while maintaining their class-leading functionality. Cutting-edge nanofibre filters are incorporated into a face-contouring design that create an effective barrier against potentially harmful airborne particles and aerosols such as dust, virus, and bacteria. Nanofibre technology ensures excellent breathability and lightness even with the assurance of five protective layers. Technology: Nano-filters, comprised of nano-fibres, deliver higher filtration efficiency than standard melt blown filters and are lighter and more breathable. They also maintain their functionality after exposure to moisture while typical filters lose their electrostatic properties once exposed to water. ADF9200T nano-filters are water resistant and protective against airborne particles, aerosols, and liquid. Show More