For the low price, I wasn't expecting much. But this case has a really nice feel-- fit and finish are very good quality. The plastic has just the right amount of rubbery flex to allow the clip to work without it being too brittle or too loose. The 2 rounded sides hold the nano securely.
The bottom is near-entirely open with only a tiny "nub" providing a stopper when the nano is slid down into the case. While this allows excellent access to the lightening and headphone connections, and allows you to dock the nano with the case on, I do wish the little stopper nub covered more of the bottom for greater peace of mind (but thus far, it's serving it's job fine).
Like the previous reviewer mentioned, the only real drawback are that the side volume controls are a tad bit difficult to press. This isn't really so much a drawback of the case as it is of the nano itself. If you press the buttons straight on (rather than from above or below), they will still function fine.