I've had these on my daily wear glasses for about nine months now.  I love them.  I rarely hang my glasses around my neck, but that's not what I bought them for.  I got them to tighten up when I'm throwing the football, working on the truck, riding the atv's, and any other activity that may make my specs slide down my nose.  These work perfect.  And they're comfortable enough that I pretty much only take them off for weddings and funerals.  I also ordered a pair of Chums No Tails, but they're too big for my 7 1/4 sized melon and don't cinch down tight enough.  Not a problem with the Croakies.  I'm out in the weather a lot, and they kind of feel like they're maybe getting a little brittle, but they still look like new. And at $6-8 a pair, I'll definitely be ordering a couple more as backups.  It does look like the charcoal color is no longer available, so that's a bummer, but I'll settle for black.  Shipping was fast and ordering was a breeze as always with Amazon.