Material: Double layer. Printed: 100% polyester fiber, Backside: 100% cotton. Free four 5-layer filter carbon sheets, each filter is recommended to use twice. Dimension: 9.3x 6.1 inches. Adjustable elastic band can meet the needs of wearing in different sizes. This fits teenagers as well as adults of all ages. Anti-Dust Mask: Suitable for cycling, camping, running, traveling, climbing and daily use. It can protect your mouth and face from dust, cold, pollen, allergies, fog and haze, exhaust emissions, and passive smoking. Comfortable & Adhesion: fit the face, nose, chin and chin. Nose clip at the nose bridge can tighten the gap at the nose bridge. The overall mask is skin-friendly and smooth, and there is no pressure on it. Health protection: Ideal To Protect Your Mouth And Face Safe By Keeping Dust Away.Our Mouth Ma SKS Is Also a Good Match For Outdoor,Bus,Metro,Hospital,Sporting, Running, Hiking And So On.We Believe That The Face Ma SKS Is a Ideal Choise Which Make You Look More Fashion.