These KN95 face masks for civilians are designed to fit over the nose and mouth of the wearers, and when properly fitted can provide excellent protection, filtering out 95% of particles as small as 0.3 microns from the air. They are made with non-woven fabrics and melt-down filtering material and are recommended for personal use. NOT medical grade! 100 masks per box. Minimum order is 100 masks. Must be purchased in increments of 100.