Honeywell Howard Leight 1010927 Multi-Position , 29 dB Noise Reduction Rating NRR, Dielectric Yes, Black

These ear muffs passively block noise by relying on the insulating materials of the ear cups to dampen sound. - They're typically worn in areas where workers don't need to speak with one another and the goal is to block all or most surrounding noise. - As the NRR of these ear muffs increases, they tend to get bulkier due to the larger ear cups and increased insulation materials.