Feature: 1.Air pollution affects our daily life and health, especially our  kids need more protection. This kind of anti-smog mask filtrate 95% of,  the smog, car exhaus, plant pollen, keep our kids from haze and stay healthy. Reusable: Made of pure cotton material,  environmentally friendly, healthy, soft, comfortable and breathable, it can  provide excellent results. 2.Can be used for  outdoors or work,the best gift for you & your family & friends. 3.Size:12.5X10cm,Strecth cotton metairals suitable for 3-13years kids. Package Contents: 10PCS/Bag Mask