I purchased this bag for my Toshiba Satellite notebook 15.6 inches. The bag is very well made and provided internally with a very soft fleece. My notebook fits in this bag purely exactly. However, it is no longer possible to allow the Unifying receiver used by me stuck in USB port. This means that if the internal size of the bag just a centimeter would be wider, it would be perfect. In the integrated side pockets can accommodate only very little. Perhaps one or the other cables, or a flat external hard drive and just a smaller, external power supply. If a mouse is used, this must be transported separately.
Conclusion: Very good notebook bag that could be somewhat larger.