Puremate masks have been safely produced at production facilities that have passed ISO standards and certified as non-medical production facilities.Efficient and lightweight WET FILTER increases efficiency and makes breathing easier with a lighter triple structure.The lining that directly touches the face is made of a high-quality Bico fabric that has even completed a derma test.It used 100% Korean nonwoven fabric certified by the Ministry of Food and Drug Safety and was manufactured in Korea.It is packed in a pouch-type zipper bag with 5 sheets each.