Respirator mask (1) material is rubber, (2).ISO 9000, (3).A.K.Ecartridge.light and handy, (4).Single cartridge Mask, 9001 military gas mask: More Information: Name Model Paking Quantity G/N Weight Paking Size Respirator mask 9001 Carton packaging 20pcs 5/4kg 53*26*34cm Cartridge 9001 Carton packaging 50pcs 6/5kg 46*31*15cm Cartridge: