I have two pair and couldnt be happier with them. I am wearing the shoes as I write this. Bad: I bought my pair in November of 2013. They did smooth out the roar of the highest decibel train arrivals and departures as well as clanky garbage trucks from painful to somewhat bearable. Not an easy fix, and disappointing to have to do so on brand new pair of shoes, but I needed them for work and had no options. Only I have unusual feeling in my feet after a long walk in these, sort of like numb a little, but it goes away in few minutes barefoot. 5w broke I immediately looked to Clarks to replace them. I read so many positive reviews I just had to see for myself. I think they may be out of production, but are worth tracking down. Anyway, zero ambient noise does not bother me.