I've had this bag for about three weeks. I *really* wish I could leave a more positive review. So far it's taken me on a vacation and a weekend trip, and I've also brought it to a few coffee shops to study. No problem finding space to stuff books, snacks, a laptop, or clothes. Due to its shape, the bag can also stand up on its own which is nice for packing. However, the weight of the backpack is not distributed well and can put a lot of strain on the neck, so unless you hike up the bag way past your shoulders and secure the chest buckle, expect it to feel like having a toddler hanging on your back. There is an option to purchase a sternum strap for $20, which might solve this problem, but if it makes such a difference, it should already come with the backpack and not separately. The shoulder straps are quite abrasive as are the pads that are supposed to rest on your back. I also wish the that the side pockets were more elastic to make storing a water bottle less of a hassle. I frequently had to remove the bag to shove my water bottle back in. I plan on returning it and looking for a different weather resistant backpack.