Material: Made Of Polyester With Soft Cloth Ear Loops.Equipped with 2 activated carbon filters with 5 protective layers The Anti-Dust Mask Equipped With Two Replaceable Activated Carbon Filters With 5-Layer Protection And M-Shaped Nose Clip.Cleanly And Hygienic. Function: Dust Proof, Soft And Effectively Prevents Infection In Crowded Or Public Places.Anti-dust And Infection Resistance Effect In Murrain Or At Crowded Places.