The 3M Peltor Optime II has been developed for demanding noise-hazard environments and uses sealing rings which are filled with a unique combination of liquid and foam. The sealing rings have ventilation channels and are covered with a soft, hygienic foam. The result is an optimum seal with low contact pressure, which provides snug comfort even during long term use.
Optime II is a suitable choice for environments with substantial industrial noise or construction machinery, airports and agricultural work.