These are not just ear plugs. ETY•Plugs® are the world’s highest fidelity non-custom earplugs. They filter the sound allowing a safe 12 decibels of sound to pass through. Regular use of these while practicing, performing and listening to music will protect you from the cumulative effects of overexposure to loud sounds. Overexposure to loud sounds can harm the tiny hair cells in the inner ear, which can lead to hearing loss and ringing in the ears (tinitus). Don't risk hearing loss!