The little zippered pouches that come with most mics are nice, but offer little protection from anything but dust. The core of this case is simple stiff foam with five holes that go from top to (nearly) bottom. Four of the holes are round, the perfect size for a 57 or 58. There's a fifth cavity which you can use for small accessories, or another fifth microphone. If you're using a square mic like a e609 or e906 that'll fit in there nicely as well.