Not an aspect of the design but an anecdote on their great customer service:
I got my pair of Ortlieb Back Roller Classics as a present four years ago.
After I had used at least one bag almost every weekday since then, the rubber shoulder pads had recently ripped and the inner pockets frayed over the screw nuts.
When I contacted their customer service with pictures of the damage, they sent me replacement shoulder straps and pockets free of charge (they even covered shipping costs) although I had no receipt to prove the age of the bags.
I got my pair of Ortlieb Back Roller Classics as a present four years ago.
After I had used at least one bag almost every weekday since then, the rubber shoulder pads had recently ripped and the inner pockets frayed over the screw nuts.
When I contacted their customer service with pictures of the damage, they sent me replacement shoulder straps and pockets free of charge (they even covered shipping costs) although I had no receipt to prove the age of the bags.