Disposable KF94 mask is comparable performance and filtration of the N95 respiratory protecting face piece. It is designed as 3D flat-fold to provide wearer with comfort and more space to breathe. When properly used, this product will filter at least 94% of airborne particles to protect the wearer from exposure to harmful air pollutants and etc. Safely secure the mask with the nose wire by positioning to the shape of your nose. The adjusted metallic strip will help prevent the wearer’s glasses from fogging up and add custom fit to face.