ETYPlugs® High Fidelity Earplugs ETYPlugs® are the world's highest fidelity non-custom earplugs. Comes with black cord and carrying case. Hearing loss from loud sound affects millions of people, but noise-induced hearing loss is preventable! ETYPlugs are the world's first ready-fit, high-fidelity earplugs that reduce sound levels evenly while preserving sound quality and clarity. ETYPlugs replicate the natural response of the ear, so sound quality is the same as the original, only quieter. Music and voices are clear--not muffled--making ETYPlugs ideal for concerts, clubs, theaters, aircraft, construction, yard work, airshows, parades, and athletic or motorsports events. ETYPlugs are reusable, but with repeated use, the eartips may lose elasticity. For best performance and retention, if you use your ETYPlugs frequently, replace them every 3-6 months. ETYPlugs are not recommended for use with impulse noises such as gunfire or for sleeping. Extensive testing has shown the Standard Size fits the majority of ears.