These don't block as much as stated in add
I bought these and they work about as good as the foam ones you squeeze insert and let expand. These did not fit in my ear well at all and could never get a tight seal and did in NO way block out 40 db. Compared to the others purchased for just $5.00 more. The Nidrati 2021 model they are comfortable and they really block out the noise. In my opinion spend the extra $5.00 you won't be sorry. Returning these.
Rating: 3 stars