This is the bicycle that weighs only 12 lbs., folds to a volume of 1 cubic foot, and stores in a backpack, ensuring ease of portability on public transportation, in a suitcase, or in an airplane's overhead compartment. The bicycle has quick release clamps, allowing you to fold or unfold the device in one minute, and the frame is made from an aluminum alloy that has a level of impact resistance comparable to aircraft-grade aluminum. The efficient, dual chain drive transmission propels the bicycle up to 15 mph, and the chains are entirely enclosed, ensuring trouser cuffs will not snag or become dirty when riding. The pneumatic brakes allow confident stops, the wheels have die-cast aluminum hubs and 6" rubber tires, and the bicycle supports men or women over 5' tall. Supports up to 180 lbs. Includes backpack. Unfolded: 37" H x 16 1/2" W x 35" L. Folded: 26" H x 6" W x 12" L. (12 lbs.)