I wake to the sound of birdsong, open the caravan door and bask in the early morning sunshine. Lake Constance appears like an endless mirror and I can‘t wait to get out on the bike. My husband and I have a quick breakfast then it‘s time to go. We stow keys, tissues, money and mobile phones in the hidden pockets and leave the backpacks behind. Last but not least, we grab our drinking bottles and head out to explore. Lunch is at a beer garden overlooking the lake. But we don‘t hang around – nature and adventure are our goals for today. We ride past some castle ruins and both agree: we want to hike up there. With the bikes safely locked up, we set off. Hiking in cycling clothes? No problem with the Square series.