Jeep JS011B Travel Backpack, Navy, 15.6"

First day using the backpack and first day using a new hydro flask water bottle, the bag failed me greatly! Overall it's a nice quality bag with plenty of space and seems like it would hold up well. If it got dirty, it seems easy to clean. However, I am not too sure what the idea was behind the bottle pockets on both side. They do not securely hold any water bottle that I have tried with the exception of a small empty plastic bottle. I placed my brand new Hydro Flask bottle in the pocket as I was walking into work and immediately it fell out, denting the bottle. Beware if using the bottle pocket!