I find this to be a slightly weird case, but it has it's purpose: you want to carry your external hard drive along when traveling or when you're bringing your computer somewhere. What's weird is that the case doesn't offer anything but scratch and lint protection, cable carrying, and maybe minorly obscures what this object is.
The case isn't hard. There's no padding. It'll keep your drive clean and separate from all your other stuff, but won't protect it from being dropped or crushed. It needs to go inside another, sturdier bag to actually keep the drive *safe*.
But really, when do you carry a hard drive around by itself? It's fine for what it is.