DescriptionThis dustproof has applied activated carbon layer to filter most odor, dust, exhaust gas, chemicals in the air to create a favorable breathing condition for you. The adjustable nose clip and non-skid ear-hanging design make it comfortable and convenient for wearing. A plenty of breathable holes and two air breathing valves ensure great permeability. This dust mask is perfect for any outdoor activities such as running, cycling, hiking, etc. You can also use it indoors for house cleaning, wood carving, etc. to isolate the dust and harmful substance.Features- Color: Black. - Material: Nylon and Dacron. - Size: 47 x 13 x 1 cm. - Effectively filtering most odor, dust, exhaust gas, chemicals with the activated carbon layer. - Comfortable and convenient for wearing with adjustable nose clip and non-skid ear-hanging design. - Featuring great permeability with a plenty of breathable holes and two air breathing valves. - Perfect for any outdoor activities such as running, cycling, hiking, etc. - Suitable for indoor use such as house cleaning and wood carving.