dust face mask, children face mask, N95 face mask nonwoven medical mask Dust Face MaskStructure: Three lays of nonwoven fabricMaterial: Nonwoven fabric, ... high efficient melt blown webwhich resists dust and oil-free particles.Adjustable nose piece provides a custom seal for differentfacial sizeExcellent ... , food processing, workshops and so on. [safe and disposable] face mask