NORTH SAFETY'S 75FFP100NL flexible filter offers P100 protection and 3-in-1 nuisance-level odor relief from organic vapors, acid gases, and ozone. The pancake filter offers the required protection against Hexavalent Chromium that employers must now provide. Designed to comfortably fit under welding helmets and faceshields, the 75FFP100NL is ideal for use when welding alloys or exotic steels.