FeaturesAdvanced air pocket design features internal noise blocking finsFour-flange profile creates better seal in the earcanalLess pressure in the earcanal eliminates that plugged up feelingRounded flanges, tapered shape fits better in the earcanalFirm stem facilitates easy insertion and removalOutstanding noise blocking protection highest attenuation in multiple-use
Specifications2003/10/EC, 89/686/EEC, ANSI S12.6/1997, ANSI S3.19-1974, EN 352-2:1993, Z94.2-1994