Black /graphite/ Surgical Face Mask *50pcs Box 10pcs In Bag ,5 Bags In Box ,40boxes In Carton -2000 Pcs Category Ii Rtype Surgical Mask Flat Type Product : Mmd30 Iirtype Non-sterile And Single Use. Detailed Specificaton Colour Black -non-woven Fabric , Meltblown Filter ,elastic Band * Material layers /flat type Outer layer: 25gsm BLACK polypropylene non-woven fabric, water-repellent effect layer. Middle layer: 30gsm High efficiency BLACK MELTBLOWN /99%/ Inner layer:25gsm BLACK polyester soft skin-friendly non-woven fabric * Size: 17.5 x 9.5cm *Earloop: BLACK Urethane Elastic Fiber length 18cm �± 1cm *Nose clamp: Iron wire with plastic coasting 10.5cm �± 1cm PHOTO STRUCTURE MAIN FEATURES Type IIR surgical mask With elastic earloops 3-ply Model: Comfort Protect Plus With long, integrated nose wire Bacteria filter performance: BFE >99% Higher resistance against liquids and aerosols Differential pressure (Pa / cm2): = 16 Microbial cleaning (cfu / g)