Commuter
"flying is easy: aim for the ground and miss!"
I had a very slow flat on the rear tyre, I ve had it since replacing the inner tube; so having changed the valve already, I took the tube out. The tube is a couple of months old and originates from Thailand. I have dicovered that there is no damage. the tube has a section which is porous! I had never encountered this before. I have an old dark green washing up bowl which I filled with water and instead of finding a steady stream of little bubbles there is a section which creates a light coloured misting effect around the tube. I have now converted this tube to elastic bands. If the bowl wasnt a dark colour, I doubt that I would have even noticed.