Protect you from dust, pollen, and bacteria. soft, lightweight, comfortable and disposable. Non-irritating to skin. Name:3-PLY Non-woven ... rate is much higher than normal standard of 98%1.Soft, lightweight, comfortable, odorless2.Fiberglass free, Latex free earloops (option of ... .We adopt materials produced by machinery face mask with wrap and spot welding,middle ply is filter,blue,17.5*9. ...