Each KF94 is pack individually KF94 level respiratory protection, filtering efficiency up to 95%, mesh breathable composite fabric, suitable for all seasons.3-dimensional riding mask with three-dimensional filter, tight fit, anti-pollen,anti-smoke, anti-dust, anti-fog Mask. After safety-certified disposable multi-layer breathing mask helps prevent you from inhaling fine particles. It filters out dust, pollen, mites, grass clippings, pet hair, dandruff, beauty, wood, construction, mowing, flour, mold, drilling, grinding and more.. High-density non-woven fabric-nano filtration-N95 filtration-high-breathable non-woven fabric, which can prevent dust, car exhaust, pollen, etc.. KF94 dust mask is foldable for easy storage and can be used indoors and outdoors. Suitable for people of all ages. It is ideal for carpentry, sports, exercise, city cycling, running, cycling and motorcycle riding and travel.