Product NameFace Mask With Valve/Without valveMaterial Quality PP Nonwoven + MB Filter + Efficient Electrostatic Cotton + Quality PP NonwovenSize 15*14CMColorWhite Grey BlackMOQ100pcsPacking 1pcs/opp bag, 20bags/box, 300pcs/carton, custom bag and box packing is availableFeatures Perfect ergonomic design, ultrasonic-enhanced thermal sewingApplicatio The fog weather, dust storms, daily cleaning, ride, flu season,public place and hospitals, construction, mining, wood processing, oil industry, chemical industry and so on Function Dust prevention, anti fog and haze, anti PM2.5, anti germs, goggles against fog