With the aim to help save the environment, more and more people are now using the bicycle as their means of transportation. While on the road, inevitable circumstances like flat tire are a normal situation. Since biking at night is possible, Kai Malte Roever has created the PUYL Air Pump and Bike Light. This simple yet, useful device does not only perform double purpose but does not require any battery as well. The bike light stores energy to its built-in rechargeable battery through the pumping action of the air pump. In addition, the bike light uses LED light thus conserve energy and save the environment.