Expandable Laptop Backpack 30L-45L with USB Charging Port

So my main reason to purchase a new backpack was because I had gotten tired of not carrying all the books that I needed at once, and having to make trips back to my apartment to offload my books in order to be able to fit my laptop in my old backpack (and not have additional weight added to my poor back).Then I saw this, and bought it. And may I say that I loooveee this backpack!!!! First of all, IT FITS EVERYTHING!!! Then, the side pockets are deep enough for my water bottle and umbrella, and the side pockets, with zippers, make for a good hideout spot for my calculator.The straps are amazing and they are just the right size to help in distributing the weight! I hang my keys in the ring holder, which is placed perfectly for easy reach, and the top front pockets are deep and wide that they fit A LOT! Going further, the adjustable straps are nice, and for me, I love that I can make it tight enough to stop my umbrella from falling off.I was going to get a pen/pencil case but I threw that out the window, because the bottom pockets fit all my pens, ruler, eraser, and pencil.As you can probably tell, I love this black backpack, and this purchase was and still is definitely WORTH IT. I dunno why I waited this long to post my review, but there you have it!!!I saw, I bought, I LOVE!!!