Sturdy, fits non-collapsible headphones great. The only drawback is that there is a lot of empty space in the middle. I solved this by sewing a little round back with a zipper along the upper rim and the hook part of velcro on the bottom so I could affix it in the middle and store the cables and extras. If that would have been included it would have been a perfect score from me.
But even if not, it has protected my headphones and the little included zippered pouch has kept my USB-dongle for PC-connection safe for quite some time now, lugging it around in different bags.