Etymotic Research ETY Plugs High-Fidelity Earplugs

The clear/blue Etymotic Research ER20-SMC ETYPlugs High-Fidelity Earplugs are the worlds highest fidelity non-custom earplugs. They reduce most noise to safe levels while preserving the clarity of speech and the richness of music. ETYPlugs are configured to replicate the natural response of the ear canal so that when sound enters the earplug, it is reproduced unchanged, exactly the same as the ear would hear it, only quieter. If used constantly, these earplugs should be replaced every 3 to 6 months.