Etymotic Research ER 20XS Standard High-Fidelity Earplugs

The clear/frost Etymotic Research ER20XS-SMF-P ER20XS Standard High-Fidelity Earplugs feature a low-profile, stemless design that sits snugly in the outer ear without protruding. This makes it especially comfortable to wear under hats, helmets and other headgear. ER20XS-SMF-P earplugs come with a small, flexible pull tab that allows for easy removal, an easy-to-install neck cord and a carrying case. If used constantly, these earplugs should be replaced every 3 to 6 months.