Packing suitcases is a bit like taking out the rubbish. Open the lid, stuff the contents inside, close the lid. It's as simple as that, because a suitcase is usually only opened again when the entire contents have been removed. Filling a bike rucksack, on the other hand, is a highly complex matter. After all, you don't want to spend minutes on tour rummaging around in a pond of cable ties, spare inner tube, glasses, tools, muesli bars and a change of clothes to fish out the required chain lock.
In order to have all the important utensils to hand in one go, you need to pack your rucksack systematically. And that requires appropriate compartments and options: The main compartment, goggle compartment, tool compartment and space for the hydration bladder are essential. On top of that, a rucksack needs to cling securely to your back even when you're walking at full speed.
In the test, 13 daypacks with space for eleven to 17 litres had to prove that they satisfy the German love of tidiness and are easy on the back at the same time. This also raises the question of whether tidiness is a question of price. The cheapest model, from bike manufacturer Cube, costs 50 euros. Camelbak and Ergon charge 130 euros for 15 and 17 litres of storage space respectively.
You can find the complete test of touring backpacks for mountain bikers below as a free PDF download.

Editor