Type:Face mask with tie on Material:1 ply SPP non woven + 1 ply meltblown non woven + 1 ply SPP non woven Weight:20g/㎡+20g/㎡+25g/㎡ Style:Adjustable nose bar helps the mask close to face when wearing; Adjustable four ties can be fixed firmly when wearing Packing:50pcs/box, 40boxes/ctn color:white/blue/green Main function:Resistant to dust and spray Size:17.5*9.5cm