Perfect for storage of router bits. Six year-old headphones look and feel like new. I wasn?t going to give a very low review but I?m reviewing everything as a whole. And you can still see white residue just like with all the other kinds. I tried everything and am very handy. CON: Overall the quality is very mediocre. Am returning them for replacement pair. Only concern is that I get a little blister on the back of my heel from the strap, but on days where I do a lot of walking, I put on a bandaid. I also took all of my custom silicone parts off and put on smaller ones just so my wife could try them. I took my closet door off to make room.