3M Peltor Sport Ultimate NRR 30 Black Earmuff features a Noise Reduction Rating (NRR) of 30, making it the highest-rated earmuff in the Peltor Sport line. This product is designed to provide reliable passive hearing protection while ensuring comfort during extended wear. Each package includes one pair of earmuffs.Key FeaturesNoise Reduction Rating (NRR): Offers an NRR of 30 for superior sound attenuation.Color: Finished in a sleek black color.Style: Over the head design for a secure and comfortable fit.Included Quantity: Comes with one pair of earmuffs.