SUREFIRE Sonic Defender EP4 size:M small caliber patches for

small caliber patches for

and spill resistance

·        Paint pen dot matrix panels on the bottom of the body to allow for identification marking

- Double layer reinforced forearm

SUREFIRE Sonic Defender EP4 size:M small caliber patches forEP4 Sonic Defenders Plus protect your hearing without interfering with your ability to hear routine sounds or conversations. Their triple flanged stem design fits larger ear canals and provides a Noise Reduction Rating (NRR) of 24dB. Sounds, at safe levels, are allowed to pass through into the ear canal, while potentially harmful noises (above 85dB) are reduced via a proprietary design that incorporates a special noise reducing filter. EP4s include