This product will defend you from out of doors, chilly, ash, pollen, fog and haze, car exhaust, passive smoking and so forth. Adjustable elastic earloop and “M-shaped “nostril clip,cowl the face from nostril to chin, present a cushty match. The superior reusable cotton facial cares in your pores and skin preserve contemporary,all you must do is change it. The product is washable, the filter will be changed. Beneficial alternative of 1~2 occasions every week. Package deal contains: four PCS carbon filters will include each cotton product.