Are You Troubled By Dust Chemicals,Smoke And Particles? Material:Made Of 100% Polyester (Polyester),Comfortable Material Will Not Rub Your Face.It Is Breathable And You Can Wear It In All Seasons Without Shrinking And Retaining Shape After Washing.The Face Mask Is Safe.Our Face Mask Are Reusableadjust The Straps On Both Sides Of The Face Mask.Apply The Two Straps On Both Sides Of The Mask To Your Ears And Adjust The Seal Rings Attached To Ensure Comfortable Wearing Experience.M-Shaped Nose Clip Fit A Variety Of Face,Protect You From Dust,Pollen And Bad Air By Preventing Gases,Fumes,Fumes And Cold Air. Widely Use:Suitable For Outdoor,Activities,Sport,Gardening,Travel,Running,Hiking,Sports,Buses And Subway.Etc.It Also Warms Your Face And Ears In The Cold Winte When Cold Wind Blows.