... nonwoven 2.high filtration face mask, 3.with ties, 2 or 3 plies, 4.easy to use Face Mask Advantages :1)disposable ,single ... bacteria ,dust and coughingAdd information :surgical nonwoven high filtration face mask ,with ties ,3plies or 2 plies .nose bridge,suitable for oral ... /operationSize:9*17.5cm 40 boxes of 50 Disposable face mask