Our Face Mask offers protection from dust & pollution. It is ideal for everyday use. Free-Size & Comfort: The elastic spandex outer ear loops of the mask are comfortable for long-wearing sessions by people of all ages. The built-in metal adjustable nose pin of the mask provides a perfect fit. Anti-Pollution & Anti-Dust: Our Masks offer protection against dust and pollutants in the air. 3 Layer Protection: Outer layer Spun bonded material(25GSM), 2nd layer is Melt Blown material (25GSM) & 3rd layer is Sun bonded material (25GSM)