I wasn't very sure when I purchased this backpack, because I was looking for a 100% waterproof one...I got it! The backpack is a little smaller than other rolling backpacks, but is just the right size, I can put inside a 5 subject notebook, and three or four books (depending on the size of them, but I'm a college student and works great!). Also, the wheels are not so loud like other backpacks I had before. It's a lite weight backpack, the color is not so bright (I bought the magenta), and is waterproof! It's awesome! Just DO it!