These really do work!
My son and I both went to a very loud rock concert.  I had a set of more expensive ear plugs with interchangeable cores based on what decibel level you want to allow.  My son used these plugs.  Both worked great and we left the show without any ear ringing or affects from the noise level.  Good quality and cool carrying case.  Worth the money to protect your hearing and still enjoy the show!
Rating: 5 stars