Noise cancelling
I used this ear putty for two different concerts I attended. I want to protect my ears more and I was sick of going home to ringing ear drums. I purchased this quickly as I got last minute tickets to a music concert. They worked beautifully. All the background noise is drowned out, you can still hear the singer clearly and if you attend with friends you can still hear them speaking to you if they are close enough. I wore these again to another gig and again worked like a charm. I would recommend these to anyone that needs to block loud concert noise out and don't want ringing at the end of the night.