: WWDOLL 5-ply KN95 face mask is protective and high filter efficiency. The outermost 1 layer non-woven fabric can filter large particles, middle 2-layer melt-blown fabric can block more than 95% particles, 1 layer hot air cotton can filter pm2.5 and the innermost 1 layer non-woven fabric is skin-friendly and softer that give you the comfortable usage experience at the same time it protects your breath with high filter efficiency| The metal nose clip is fixed to the inner of the mask. you never need to worry about the Inserted nose clip falling off, and the flexible metal allows you to adjust the mask tightly fits your face
