Description Thick layers of protection effectively resist the invasion of harmful substances, protecting against dust, liquids, and weather. Seal the bridge of the nose improves the adhesion of the item. No falling off, comfortable to wear and the mask is designed with high strength. Perfect for machining, automobile making, sports, running, hiking, climbing and so on. Adjustable nose clip fits the face, fixes the sides of the easily detachable nose wings, helping to isolate the polluted air. The mask is wide enough to cover the nose, mouth, and face, it fits most faces. Independent one-way breathing valve effectively reduces respiratory resistance.