Key Features Reusable plugs NRR 27dB rating of protection Reusable plugs are soft, flexible and have baffles for sound blocking Includes hard carry case DetailsBirchwood Casey® Reusable Ear Plugs are NRR rated 27dB of protection. Reusable plugs are soft, flexible and have baffles for sound blocking. Birchwood Casey® Reusable Ear Plugs are corded and include a hard carry case. 43311 - Reusable Corded Ear Plugs