Face Mask With Valve,Material: Quality PP Nonwoven + MB Filter + Efficient Electrostatic Cotton + Quality PP Nonwoven,Safety Masks Mouth Anti Pollution Unisex Outdoor Protection.100% brand new and high-quality Dustproof Mouth-muffle with Filter Dust Mask..Non-woven fabrics and filtering material.The comfortable material will not rub your face.Reduce the viral infection in the crowd.Color:Grey,pink,white/blackStyle:4ply with earloop, with valve, nose clip.Packing:1pcs.Features:Perfect ergonomic design, ultrasonic-enhanced thermal sewing.Function:Dust prevention, anti fog and haze, anti PM2.5, anti germs..Application:The fog weather, dust storms, daily cleaning, ride, flu season,public place and hospitals, construction, mining, wood processing, oil