The advantages of a 20-inch folding bicycle are plain to see: low stowage dimensions, easy transportation by bus and train and great handling on urban roads. Disadvantages: none – models such as the Rob Fold can be used as full-fledged everyday bikes, especially since the Bosch Active Line motor provides harmonious, optimally controllable assistance. Featuring a 400-watt-hour battery optimally tailored for city cycling, the compact bike with a 7-speed gear hub and hydraulic brakes is sturdy and low-maintenance. Ample scope for adjusting the handlebar and stem height makes it easier to adapt the bike to the rider's body size. The handlebars can be folded to the side, meaning the bike has pretty narrow dimensions when parked in hallways.