If you're looking for a backpack that will fit everything you need and more then I highly recommend this backpack. It's not too big or too bulky, but you'll be surprised at how much you can fit in without overwhelming it. To be honest, this backpack is similar to the Mary Poppins bags, especially for the price. I have a 15.6 inch HP Omen laptop and it fits perfectly. I would say a 15.6 inch laptop is the largest laptop you can fit. I've got some room left, so keep that in mind. I have yet to test this backpack as school hasn't started yet, but I'll definitely be updating as the year progresses. The backpack does not have to be waterproof. When I splashed water on it it seeped into the fabric but not into the backpack itself. I recommend buying this pack, it's efficient, unobtrusive and can handle anything you throw at it.
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