My husband was in the navy and served in aircraft carriers. One of the things he tells me was that when they went outside during flight operations, they had to wear hearing protection, either earplugs, “over the head” hearing protection or a combination of both. It can get quite loud. If you have ever been to a concert you know that the noise can be quite bothersome and if the noise is to loud it can actually harm your hearing. Wearing concert ear plugs is one way to protect your hearing at concerts. I can think of several other uses for this type of hearing protection, from wearing them on a pistol range or at a sporting event.