100pcs/lot disposable square cotton mat breathable pad inner gasket face mask dust anti influenza

100pcs disposable 3 layer masks gasket safety anti dust and haze breathable mouth face mask replacement pad square cotton mat features: -use disposable mask pads to reduce the waste of masks. -use a disposable mask pad to enhance defense effects. -use disposable mask pads to extend the life of the mask. --affordable price, complete variety, convenient for your purchase and timely protection of family health. --the mask must be sealed properly around the nose and mouth, so that all inhal...