the bottom part comes off every now and then , but if you dont mess around too much its actually a good case. It fits perfect. - Instrument volume (¼" input). Personal rant, feel free to skip: Unlike many reviewers, I DID NOT get these free or for any kind of discount. This is a quality, plastic power strip with 10 outlets, 4 usb ports, minimal sleek plug that doesnt block other outlets, and a very value oriented set of quality internals. These SpinFit tips have very soft touch, no pain in ear canal at all, the pods wont fall even if I jump and shake my head hard! I purchased a size USA 9. It?s very sturdy when strapped snugly. Easy settings, and satisfying. Have use these sandals regularly for 2 months now.