... . Nose clip for adjustement.Integral ultra-soft facing joint. Exhaltation valve high performance. Box of 5.Materials:Mask: non-woven synthetic ... 89/686, notably regarding ergonomics, innocuousness, comfort, ventilationand flexibility, and with EN149:2001 standard (nominal protective factor : 20 X AVE (Average ... ) for verytoxic dust: lead, quartz, chromates). Non woven face mask with valve FFP3EN 104018