Well.....I got this 'daypack' as I need a backpack for books when walking around that can also be discreet and folded up when not in use, it 'does' fit this purpose to some extent. I got the green one, and the biggest 'plus' factor for me is that it's cute, well, I'm being honest. Aside from good aesthetics, I was hoping I could fit some good sized library books in here, I know that with something of this size and no reinforcement of the bottom, I wasn't expecting it to hold 5 textbooks (were I to attend school again) but I do/did expect to be able to fit around 10 library books or so. I would say I can fit 3 one and a half inch wide hardbacked cookbooks from the library as the max before it's too heavy for me to 'lug' around, that's about it. Maybe 2 cookbooks and 5 light books or a whole lot of very light paperbacks. If you are getting this for the purpose of putting an Ipad, tablet, Kindle as well as notebooks, you would be happy bc even with the tech devices, you can fit 25 more notebooks, easily. Also, if you were stuffing clothes in it for hiking, let's say, you can put 5 tshirts, a pair of pants and still have room for a notebook or two. Also, I'm not convinced a laptop wouldn't be too heavy for this bag, it just depends on you. Ultimately, if you see rain in the forecast, there may be 'some' give for a rainy day but not entirely (like if it just starts to sprinkle and you run to shelter but not fit for a rainstorm by any means). Good thing it doesn't rain too much where I live and I just got this for the aspect of folding it nicely when not in use. Aside from the main bag compartment, there is a small zippered compartment inside (maybe some pens will fit, I'll use that 'as needed'). I'm not sure what the two thin, long compartments in the front are supposed to be for aside from the umbrella you may need and I find that putting inkpens works well with it. All and all, I'm happy with the purchase bc it's foldable, I like the material, it's cute, but I do wish I could put more hardback books in it but 3 without it being too heavy, I'll just have to limit myself at the library.