Awesome color and great bag. I got a size medium because I was concerned about having enough space, I cannot imagine what a large looks like. I carry a laptop in it's own neoprene sleeve, so not having the laptop section did not matter to me. I use the back slip for my wallet and a few papers to keep them organized. I can easily fit my laptop, water bottle, and 2-3 textbooks in here without a problem. It is wide enough that there is room on the ends with the books inside, so space is easy to come by (that was a problem with my older bag-to narrow, and if you filled the middle section the ends hugged in so nothing moved but that meant I could not even slip a pen out when full). This would definitely work as an overnight bag as well. With the front wall zippered section, space for pens and small compartments, I do not need to carry a separate purse as well, so I can live out of this bag. Highly recommend it for a great, efficient larger bag.
Cons: only real con is the lack of a grab handle on the outside. Can be a little awkward when trying to just grab it off the floor of the car.