Good quality (but beware it's just a cover)

This Case Logic case for 15.6-inch laptop is very good.
Made of nylon, with seams that look very solid.
I had a concern about the size, because the previous bag Case Logic 15.6 I bought was too just for my PC Acer Black Edition 15.6-inch (38,9cm width). Finally, he joined just in this case, that matches it.

Note that I emphasized that this is only a cover and not a bag: there is no shoulder, no handle, and only one large compartment for the computer and a pocket on the face before. This pocket helps contain a power supply and a mouse, pressing well, but not much else.

This cover can be used as protection for the computer to store it in a larger bag or suitcase, or to transport it under his arm.