Thanks Anso, that's helpful. Would a paperback book or a kindle fit? I've since googled it and found video clips on QVC Germany, and wasn't sure that it would accommodate a book/kindle and bulky sunglasses case - which for me are essential when travelling - as you say it did look quite slim.
Just got my Bona bag and tested. I would say no to a paperback book unless it's smaller than average height + width wise. It doesn't really fit.
As for a Kindle, I have a Kindle Paperwhite. It fits in the furthers back compartment (which is just about taller than the other compartments) with no case fine. With the Kindle in, it gives just over a centimetre of free space to the top of the bag. If I add it with a case (I only have a neoprene sleeve type case) it still fits, but it is just about.
I would say you could fit a Kindle (not too bulk case/sleeve on it), mobile, keys, anything small and flat like documents etc and a non-bulky wallet. Not really a bulky sunglasses case. I mean you *could* get a glasses case in there but then not much in other compartments as the case would make the bag budge a lot.
Hope that helps