The SadaBike have 5 strategic points: 1) Hubless bike. This means: Innovative Design and very good ergonomics and comfort. 2) Hubless and foldable bike: It has a special fulcrum in the center, all the frame folds, into a compact shape, similar to an umbrella. 3) Foldable with a single movement. 4) Portable on Shoulder: The small size has the advantage of carrying the bike on the shoulder. 5) Portable as a Trolley: The backpack presents a central hinge that allows the expansion in the trolley mode.