With the Herschel Classic Xlarge 15 inches, you have plenty of room to bring all your textbooks and electronics to school. This classic backpack has a 30L capacity and has a special compartment for your 15-inch laptop. Thanks to the 2 spacious side compartments where you can put your water bottles, your equipment stays clear of leaking bottles. The bag is also splash proof, so you can safely walk through a little rain. Small accessories such as your keys and pens go in the spacious front compartment. Your phone also gets its own place in the small interior compartment. The shoulder straps of the Classic Xlarge are padded and adjustable, so you'll always be comfortable on the road. Note: the size of your laptop, like 15 inches or 17 inches, is the screen size, not your whole laptop. If your laptop has wide bezels around the screen, it's better to choose a laptop compartment that's a size bigger. That way, you'll know for sure that your laptop fits.