The new A-Bike is very useful.It is the world smallest bicycle.Although it weighs only 12 pounds(5.5 kg),it can carry a rider as heavy as 247 pounds(112 kg) and can go as fast as 15 miles per hour(24 kph).And the A-Bike is very convenient for you because In fact,it is so light and small,you can even fold it up and take it on the bus with you for go to work