Product Details 1. 100% brand new dust mask, with filter, super soft, simple, light, and reusable. 2. The 5-layer PM2.5 activated carbon filter element can filter particulate matter, gas, odor, dust, pollen, smoke, PM2.5, bacteria, bacteria and viruses. 3. Easy to clean, the mask can be washed by hand, hung up and dried, and the filter can be replaced. The mask can be used for one year. 4. Suitable for running, cycling, hiking, skiing, handicrafts, gardening, anonymous and other outdoor activities, such as travel, hospitals, public places. 5. Very suitable for children, elderly, pregnant women, women, men, teenagers, etc. feature Packing: exquisite PE bag packing Gender: unisex Size: 22*14cm Crowd: Adult Size: One size fits all adults. Material: cotton, non-woven fabric, activated carbon cloth, filter cloth. note The plug-in filter cannot be cleaned, it is recommended to replace it once a week