Surefire Sonic Defender EP7 ear plugs are designed for effective hearing protection. The foam-tipped stem features soft memory-foam Comply Canal Tips, ensuring a comfortable fit for most users. With a Noise Reduction Rating (NRR) of 28 dB, these ear plugs allow safe-level sounds to pass while reducing louder noises over 85 dB through a special noise-reducing filter.Key FeaturesNoise Reduction Rating: Provides an NRR of 28 dB for effective hearing protection.Foam Tipped Design: Equipped with soft memory-foam Comply Canal Tips for enhanced comfort during use.Filter Caps: Includes attached filter caps for additional protection against lower-level noise.Communication Compatibility: Functions as earpieces for compatible radio communication systems.