Although I write another person, we also purchased multiple items and tested, but this item is superior in muffling performance overwhelmingly. Although it is a price difference of about 100 yen, I was excused that the sound deadening performance so far is different here. I am very satisfied.
Purchased several items including cheap ones with good products and good reputation. I tried it and it is better to use the noise effect. I felt the difference clearly with a slight price difference. Goods to be evaluated more.