?The product is breathable, suitable to wear in spring and summer. ?Made of new sponge material, can filter small particle of the air. ?Elastic earloop mouth is wide enough for cover nose, mouth and face, very comfortable to wear. ?It can protect your mouth and face from dust, pollen, ash, fog and haze, vehicle exhaust and passive smoking. ?Flat ear tape that ears do not come to have a pain even if you wear the product for a long time.