EP7 Sonic Defenders Ultra protect your hearing from dangerous noise levels—without interfering with your ability to hear ambient sounds and conversations. These affordable, non-electronic earplugs feature Hocks Noise Braker filters that allow lower-decibel sounds to pass through, while potentially harmful sound levels above 85dB are reduced to safer levels. For situations where you want to block out lower-level noise as well, EP7s feature attached stopper plugs that can be closed to provide an impressive Noise Reduction Rating (NRR) of 28dB. Soft-polymer construction and Comply Canal Tips made of soft memory foam provide all-day comfort, while the patented Ear Lock by Surefire design contributes to unparalleled retention. And their low profile le means reusable Sonic Defenders Ultra can be worn under headphones, helmets, or masks—even while using the phone.