Some people may think that wearing earplugs to a rock concert is just plain silly. Why would you bother going to a loud rock concert, and then mute the sound.
Rock concerts can cause hearing loss and tinnitus. If it is good enough for the musicians to wear ear plugs, then it is good enough for me.
The Hearos Rock ‘n Roll series ear plugs provide a noise reduction rating of 22, and are washable and reusable.
The Hearos Ultimate Softness Series provide a noise reduction rating of 32, and are not washable.