This bag is GREAT. Lovely design, good quality, I like the variations of all the straps and the multiple pockets.
However, I had to give 4 stars because the main zipper doesn't zip all the way across, leaving two gaps on either side (as seen in pictures 2-4). The gaps aren't huge and the extra buckle does help, but it still feels less secure than I was hoping. Especially since I'm planning to use this for day trips to London, so I feel like I need to be more vigilant about pickpockets now! But again, not a huge deal, and the bag is pretty secure otherwise.
On a brighter note, I stuck some of the postcards/cutouts I got as freebies from this shop onto the inside of the smaller bag, as it has a window in the front similar to an itabag! Very happy with it! <3