That looks OK. My problem is not how much space it occupies on my bike when not used, but that I want to minimize the cost of the flight. This means that I would check the bike in, and have a big trolley-bag (55x40x23 cm) and a small carry-on bag (40x30x20 cm) (probably the 2 back panniers, one full with the roll-down part not really rolled down, this would increase it's height from 42 to some, probably reaching the 55cm limit, the other closed (42x32x17) fit the small carry-on requirements) and the handlebar bag is supposed to fit inside one of the panniers, but if it was hard case, then it wouldn't fit IMHO. Now that I see it can be made as small as the closing lid it's definitely small enough.