Very good alternative to carry on luggage
I was in two minds getting a carry on luggage or upgrade to the 40L from my other Vibe 28L Anti Theft back pack, which did the job as I needed for a few days away, although could have used the 28L.
There was plenty of room to put additional clothes and only slightly longer than the 28L hence easier to carry on your back and put up in the plane cabin rather then the carry on luggage which takes up space!
Like the 28L and many other products I find pacsafe products are robust, good security features, logo not in your face and value for money.
The only criticism on the 40L Vibe is no external pocket to put wipes and documents and no internal pockets e.g. like the 28L. The 40L has is a large internal pocket for document but just waste of space and not ideal.
If the 40L could have replicated the pocket features both internal and external then it would have been a 5 star.