Good stuff. Silicone provides a better grip of the device (less risk that it slips between your hands). All cuts of the case are made, there is no particular discomfort, and I find it more aesthetic cover a "crystal". However, and this is why I take off a star, the cover covers (fine fashion) the touchpad and buttons answer / end. You can not use the touchpad (for left / right / up / down or use the pointer), apart from the click, although the thickness is reduced there. Apart from this detail, a very good buy!