Genuine GI Noise Reducing Reusable Earplugs NSN # 6515-00-442-4818 (4700) 2 Per Set NSN # 6515-00-442-4818 Noise Reduction Rating: 25 Decibels Super-Soft Hypo-Allergenic Silicone Offers Unsurpassed Comfort & Protection Three Ultra Thin Flanges Provide Exceptional Fit While Minimizing Pressure To The Inner Ear, Insuring A High Level Of Acceptance Among Users May Be Reused Indefinitely Simply Wash In Warm Soapy Water Without Compromising Flexibility Comfort & Protective Capabilities GSA Compliant Made In USA