A good bike, tires don't need air | A good life

For people like me who are lazy, pumping air into a bike tire is an obstacle to human progress, its讨厌程度 is about equal to that of mosaic. But don't worry, the savior has come. Recently, Benjamin Krempel from San Francisco has designed a type of bicycle tire called Pumptire, which can inflate itself by using the rolling during the process of riding, and after reaching the preset air pressure, it will automatically stop inflating.

The Pumptire consists of an inner tube, outer tire, and a detachable valve. Its uniqueness lies in the hollow small air pipe on the outer ring of the outer tire, and this small air pipe is connected to the inner tube. When riding, air is pressed into the hollow small air pipe of the outer tire through the valve, and with the pressure when the wheel rolls, the air in the small air pipe can be repeatedly pressed into the inner tube.

Of course, if you think that a bicycle that cannot be manually inflated is not a good bicycle, in fact, this tire priced at $129-149 can also be manually inflated. Currently, this design is still being refined.