Pretty good for low frequency

I just got these and used them this weekend to block out the Karaoke noise coming from a Bar on my block. I am used to City noise, but this is a whole other nuisance. I have a white noise machine that blocks out the (very bad) singing but I couldn't block out the bass. I put these on and in combo with the white noise, I could barely hear it. It was enough to allow me to go to sleep. Of course, these are not meant to be cozy for sleeping and you can only sleep on your back, but hey, you gotta do what you gotta do. When you are desperate to sleep, you will literally try anything. I'm sure they look stupid, but I don't care because I was asleep. They fit my head tightly, so I'm sure if I wore them for a long time I would get a headache but the bar closes at 1am. I just woke up in the middle of the night and removed them. Works for me.

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