The Volume of Panniers: How do you decide the volume needed?
Do you have any tips or feedback regarding the volume of bags needed? Context: As part of a month-long bike journey, a year later, I'd like to purchase some bike bags. I would go camping with a tent, sleeping bag and mattress, kitchen utensils, and clothes. I hesitate between the Ortlieb back roller plus 2x20L either 40L or 2x35L or 70L. However, I fear 40L is too little and 70L is too bulky. Do you have any experience with the pair of 70-litre bags?