Spunbond Polypropylene:soft,breathable,convenient Nose-piece adjust for customer fit Average dustproof efficient 99%,BFE>95% Different colors and weight /thicknss available, different size for baby, children or adult2-ply,3-ply,4-ply, earloops or ties.Pakaping details: 50pcs/box, 40boxes/ctn Disposable Face Mask with Earloops or ties