I have these.
Pro: cheap and good materials used.
Cons:
1. when fully expanded, the bags tend to bend toword the rear wheel. A some kind of rack is necessary.
2. the harness system used is not very well designed (doesn't really fit well, doesn't really firmly lock the bags, additional ties necessary) and the piece of material (connecting the two bags) that goes over the back seat is very slippery.
3. being 82L one would say great! 2 big topcases to shove things in... Actually, they are not so spacious...
