Ep7 sonic defenders ultra earplugs protect your hearing against noise induced hearing loss (nihl) without interfering with your ability to hear routine sounds or conversations.Their foam-tipped stem design, featuring soft memory-foam comply canal tips, fits most people and provides a noise reduction rating (nrr) of 28 db.Sounds, at safe levels, are allowed to pass through into the ear canal, while potentially harmful noises (above 85 db) are reduced via a proprietary design that incorporates a special noise-reducing filter.Ep7s include attached filter caps, which can be inserted for additional protection and blocking out lower-level noise in situations where hearing ambient sounds or conversations isn't critical.Color: BlackNrr: 28 dBQuantity: 1 PairStyle: Foam TippedMaterial: Foam