New article, all about inner tubes: tire fit, the three kinds of valves, pump compatibility, tips and tricks.
![inner tube, deflated and rolled up](http://sheldonbrown.com/blog/wp-content/uploads/2015/12/inner-tube_IMG_7295sm.jpg)
What's new at sheldonbrown.com
New article, all about inner tubes: tire fit, the three kinds of valves, pump compatibility, tips and tricks.