The A-bike is a revolutionary new folding bicycle that breaks new ground in the areas of weight, folded size and design. Weighing in at just 5.5 kg, this ultra-portable folding bicycle is the lightest in its class. By utilizing quick release clamps, fold and unfold only takes 10 seconds. Its key advantage is true portability. It can be easily carried on public transportation network, and its compact size allows for easy storage. The A-bike can attain normal speeds without having to pedal any faster than with an average large wheel bike. Another key selling point is the totally enclosed chain system. A commuter does not need to worry about dirty trouser cuffs when riding as all the greasy parts are concealed.