The Case Logic Evolution Deluxe 15 inch has special compartments to carry your 15.6 "laptop and your tablet. But also (school) books, documents, clothing and small accessories can be stored organized thanks to the many compartments. The back and shoulder straps This not only prevents a sore back, but also sore shoulders, and thanks to the front band on the back, the Case Logic Evolution Deluxe glides easily over the handle of a trolley. Note: the size of your laptop, such as 15 inch or 17.3 inch, is the size of the screen, not of your entire laptop. If the border around your screen is wide, choose a laptop compartment in a larger size to be sure. That way you know for sure that your laptop will fit.