The EarPro EP3 Sonic Defender Earplugs by Surefire protect your hearing without interfering with your ability to hear routine sounds or conversations. Their double-flange stem design fits most people 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 the patented Hocks Noise Braker® filter. EP3s include attached stopper plugs, which can be inserted for further protection, and they also block out lower-level noise like that heard on a plane. They can be used in situations where hearing ambient sounds or conversations isn't critical. The right/left color-coded Sonic Defenders are made from a soft but durable, hypoallergenic polymer and are ergonomically shaped, with an adjustable-stem design, providing a secure fit, all-day comfort, and extended product life (3 to 6+ months, depending on usage and care). And their low-profile design means they can be worn while wearing a helmet or mask, or while using a phone or headset. Each set is packaged in a convenient carry case.
EP3 Sonic Defenders are sold as a single left/right set or in a box containing 25 sets. Each set is packaged in a convenient carry case.
All sizes of EP3s have identical flanged ear canal stemsﾗthat is, the portion that fits in the ear canal.
The sizesﾗsmall, medium, and largeﾗrefer only to the outer earpieces that fit in the ear's concha bowl and help hold the EP3 in place. Proper EP3 size is based on the dimensions of your ear's concha bowl. Size Medium fits most people and is recommended for concha bowls approximately 1" in height. Smaller than 1" should choose Size Small, and larger than 1" should choose Size Large.
24dB* Noise Reduction Rating (NRR) with stoppers inserted