100% Polyester Clip closure Hand Wash Only Size:7.9" X 5.9"(20 X 15cm) With Adjustable Ear-Loops Masks. Material Description: 100% Polyester, 5-Layer Active Carbon Filter, M-Shaped Nose Clip.(Equipped With 2 Filters) Product Features：It Has Good Air Permeability, Easy Breathing, And Has The Characteristics Of Windproof, Sweat Absorption And High Dust Removal Efficiency.It Can Protect Your Face And Lips From Smoke, Cold, Allergy, Fog And Haze, Tail Gas, Low Temperature, Allergic Substances And So On. Wide Application: Our Masks Is Ideal For Both Women And Men, Suitable For Cycling, Camping, Running, Travel, Climbing And Daily Use. It Would Be A Must-Have Item For Cycling Camping Travel. Can Be Cleaned Many Times, Recycled, Health And Environmental Protection (It Is Recommended To Wash By Hand, Do Not Bleach).