But his spare tube turned out to be punctured, too.
He realized that his seatbag was so crammed with stuff that it was rubbing against the tube, and caused it to tear.
I had to admit, that happened to me once, too. I was using a small bullet-shaped bag that could barely hold my tube and multi-tool. But I also had jammed a patch kit and tire levers in. The multi-tool’s edges got my tube, and I had to sag in during a semi-supported ride.
I’ve dealt with the issue since then by ditching the small bag and putting on a larger one. And my spare tube is now parked in an old sock. I cut the toe area off the sock, because that’s all you need to store a tube. It’s worked like a charm — I haven’t had any more tubes damaged in an overloaded seatbag.
Some folks I know use a Ziplock bag for their tubes, and a second bag for other stuff. How about you? Any tips for keeping your biking necessities safe and organized? I’m always looking for better ideas.