The mask is made of 3 layers of high-quality non-woven fabric and meltblown fabric; it has a stronger filtering effect and is more warm and breathable. Adjustable soft nose clip design for a better fit on the face. Provide you with a comfortable wearing experience. One size for most adult men or women, also suitable for teenagers. Suitable for adults and kids of all ages. Can be used for outdoor public areas, schools, offices, and home usage. With the new 3-ply design, It can help block pollution so you can breathe easily.