masks developped by the international fashion designer and senior product research and development team spent two years, unique and fashionable appearance so you don't have to worry about "look alike with others". BLATN electronic masks adopt efficient four-layer filtration technology, which can effectively block the pm2.5 in the air, smoke, dust, pollen, the gaseous pollutants and so on, It not only can eliminate air pollution health risks, also can make it easy for you to experience a comfortable breath of fashion trends.