These were also Amazon "renewed" so refurbs but I cannot tell and have had good experience with other renewed products. Thank god for having good neighbors. I decided that Im going to wait for someone to come out with a pair of quality in-ear noise cancelling headphones and spend my £225 (or more) on them instead. Ended up giving them to my nephew in hopes he could wear. I just played music rather than using pink-noise as others have suggested. One thing I wanted to point out, this does have two holes that you can put two screws for a more secure mount. I noticed that these shoes are now made in a different country so perhaps they changed manufacturers. SO THE LOCK ISNT IN THE TIGHTEST POSTION WHEN THE KEY IS REMOVE. I got these for my son to wear with socks from my house to my parents and then this summer to play in the water. These have it all:+ sturdy construction: only reason I ever buy new ones is because the old ones get too dirty.