After my last week tour along the Danube with my budget panniers in the rain, I promised myself a set of the rubbery yellow things all the Germans who passed me seemed to be using. With the hope of keeping my kit dry I’m now in a position to spend some money. I’m planning next years trips and thinking I want the space for a two week minimum tour, using guest houses, B&B etc so if I go longer I’ll have access to washing facilities and don’t need to pack a tent etc. I’m looking at the Ortleib back rollers but what size would do? Don’t want to get too small. Would the 40l be sufficient for a European tour, not off the beaten track? Anything else worth considering? The Overboard looked OK but only in a smaller size.