I bought this bag for an upcoming trip to Italy. I did a lot of research before buying and almost went with the smaller version (mostly because of the price, but also because this one looked huge in the pictures). I'm glad I "bit the bullet" and bought the larger one. It will hold everything I need to bring and the water bottle pocket is awesome. My favorite water, Aquafina, fits perfectly. I don't know if other reviewers were using a nalgene or an odd shaped bottle, but the 16.9 oz purchased water, fits perfectly. I love all the extra features and the light purple lining of the black bag. It lays just as it should and doesn't bounce around on my hip. I love the security features and how I can also wear it as a shoulder bag. Great job Pacsafe. Great job eBags. And great job Amazon.com! Can't wait to test it in Italy!