Good for safety, but not ideal for sound quality.
I have used these ear plugs at a couple of concerts and I do find that they help in protecting my ears from getting damaged. I have extremely sensitive ears and don't mind looking like a dork with earphones at a concert if it means keeping one of my senses intact. I have noticed though that using these headphones does cut out a lot of the desirable mid and high frequencies of a performance. If the concert isn't too loud I'll sometimes not even use these because I want to experience the full sound. However more often than not the speakers are cranked up way higher than they should be and you really need these ear plugs to keep your ears safe.
Rating: 3 stars