I REALLY want to love this pack..I LOVE the blue lining and THOUGHT the various compartments would really suite my needs. Unfortunately, the main "center" pocket has a smaller zipper section than the laptop pocket. I always open the wrong pocket by accident and have to re-zip and open the other one. I could probably get used to this over time but I wish the laptop pocket was inside the main section instead of having a whole separate section-also adds bulk. The laptop pocket takes up a lot of space so it is difficult to fit things in the center and access them. My main issue is that water bottles DO NOT stay in the side pockets-this was my whole purpose for purchasing this pack!!!! Even my daughter's small munchkin 12 oz cup falls out. Can't fit a Nalgene or anything in it. Every bottle falls out the second you lean even slightly forward. I'm so disappointed and for this reason will be looking for a different bag. I wasted my money. Pros: There are a ton of internal pockets & the interior blue color is GORGEOUS and also makes it easy to spot items.