This product can be washed and reuse. Manufactured with a special 3 layers design in air flow and a liner of Quick Dry polyester outside layers fabric and middle layer Nano-fiber filter fabric that feels comfortable when wearing and breathing. Product proved high grade of effectiveness in some of the preliminary lab test that where done.
＊ TTRI, Taiwan，Suspension particulate matter test report，PM 7.0~0.4 filtration efficiency up to 100 %，PM 0.3 filtration efficiency up to 99.97 %，PM 0.2 filtration efficiency up to 99.92 %
＊ Nelson Laboratories, USA, BFE (Bacterial Filtration Efficiency) up to 99.9 %, VFE (Viral Filtration Efficiency) up to 99.9 % and oiI particulate(DOP) filtration Efficiency up to 95.36 % Barrier for pollen ( with a diameter from micro to hundred microns) and dust mite (with a diameter 100 to 400 microns)