Compared to the ordinary mask which is not resistant to water, our KN95 mask effectively prevents such infection caused by the slit splash of the patient?s body fluid or blood (slit size is between 1 ? 5um). Effectively filters out air pollution, dust, PM2.5, fog, bacteria, odor, dust, pollen, and so on, protecting the respiratory tract from being infected. Three-dimensional cutting, fine stitches, KN95 face mask fits your face tightly, preventing spit splash from entering into your face. High-quality elastic earloop, suitable for different face shapes, not easy to slip, allows you to take on or off easily and quickly. Built-in adjustable metal nose-bridge strip, just press it gently to fit the nose bridge to better seal your face. Made up of non-woven fabric, anti-bacteria, and breathable, KN95 face mask is comfortable to wear. Suits personal care, laboratory, manufacturing industry, service industry, and nail salon, etc.