These GI issue ear plugs come two per set. With an NSN# of 6515-00-442-4818 these earplugs have a noise reduction rating of 25 decibels. Made from super-soft hypo-allergenic silicone these earplugs offer unsurpassed comfort and protection. Their 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 by simply washing in warm soapy water which will not compromise flexibility comfort or protective capabilities