The thick layers of protection effectively resist the invasion of harmful substances, protecting against dust, liquids and weather. Nose bridge improves the adhesion of the item, thus no falling off, comfortable to wear and the KN95 Face 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 KN95 Face Masks is wide enough to cover the nose, mouth and face, it fits for most faces. Independent one-way breathing valve effectively reduces respiratory resistance.