I bought this item a few months ago and have been using it almost non-stop since as an alternative to plastic/jute bags for grocery shopping and even my laptop/books when I am in study mode as it is very capacious. I love the contrast cream lining and have had no issues at all with the zip. All the fittings seem high quality to me. The front compartment has proved to be extremely useful for my purse and mobile and there is a zipped compartment in the main part of the bag that I use for keys and ID for work. I am tall so didn't have an issue with the straps being long and they are adjustable anyway.
The backpack looks nice, but it has the same issue as the Duffel bag - the straps are too long and the bag sits way too low. I am quite short so this is very annoying. Other than that, I got a small issue with the zipper quickly enough, which has now developed into a huge issue - there is a big hole where the zipper is. The backpack is huge, but apparently the zipper can't handle that much stuff in it... I have had it for almost 2 years now, wearing it occasionally, so I am not eligible for a refund I guess, but I am anyway unhappy as I have a 20€ backpack which holds better through years.