The Moldex Comet reusable earplugs offer a convenient finger pocket for effortless insertion. Extra soft material, an air pocket, and a hollow stem design make Moldex Comets the most comfortable reusable earplug on the market. Comet uncorded ear plugs are colored a bright green which allows for quick and easy hearing protection compliance checks.The Moldex Comet earplugs have a 25 Noise Reduction Rating (NRR 25db) and meet the ANSI S3.19-1974 safety standards.