Shell that fits perfectly my xperia SP. It protects the laptop well with a ledge that covers the very edge of the notebook (no screen so loss), now not certain that specifically protects the rim unless you put the screen side. Fairly rigid shell, which almost not increase the thickness of the notebook, pleasant to the touch, and that leaves the side buttons easily accessible and perfect for cutting back. The light bar remains visible notifications on the 2 sides, great. Small bonus gift, a pen stylus can be practical, and a protective film screen that I have not yet applied. For durability of quality, will have to see over time. Good buy in summary, that matches my expectations.