【Powerful 5-ply Protective Barrier】Compared to a standard disposable 3-Ply mask, the KN95 face mask of 5 layers composed of two layers of melt-blown fabric which offer over 95% filtration protection, one layer of hot air cotton capable of filtering PM2.5 particles and outer layer of non-woven cloth to block large particles while skin-friendly inner one absorb the moisture from breaths, is designed to apply more respiratory protection.