i am a professional musician so playing concerts are part of my job, I have found these ear plug to be of the highest quality and are amazing to use, they are comfortable and do not affect my hearing when worn

Used for the first time at Roger Waters "The Wall". I used the silver filters (medium) and was able to hear everything. The cannon shots were even a comfortable sound and that was the loudest noise in the concert. They were the most comfortable ear plugs I have used.