They worked as advertised.
I bought these specifically to attend an outdoor stadium concert. They worked exactly as I wanted them to work. They reduce the noise by an advertised 18 db which was enough to keep my ears from ringing afterward while still being able to enjoy the music during the show. They were very easy to put in. A little difficult to take out due to their size, but not bad. They are definitely low profile and someone would really need to look to see you wearing them. Much better than the cheap foam ones.
Rating: 5 stars