Made from expandable slow recovery foam that helps provide the best combination of comfort and protection for most users. Typically foam plugs are rolled down prior to insertion where the foam plug expands to provide a snug and secure comfortable fit.
The fitting of hearing protection products is just as important as establishing the total noise level.
To insert a foam ear plug, slowly roll and compress the plug into a very thin cylinder. While compressed, insert the plug well into the ear canal. This will be made easier if you reach around the head to pull the ear outward and upward during insertion.