I mentioned it a good while ago about using oval pieces from a plastic milk bottle, but since then, I have found that they are no good at all and would not reccomend them now. Initially they were the bees knees and worked well when I first used them, but on a good 460+ plus two and a half day ride last year, I punctured and needed a tyre boot to effect the repair to get home, I always carried about four tyre boots with me and I used one of my plastic milk bottle ones, shortly after repairing it, I punctured again, on taking my tyre off, I was greeted by very sharp pointed shards of plastic coming out of the tyre and the puncture was probably caused by a piece of the plastic. On inspecting the rest of my milk bottle tyre boots, I found that they had all gone brittle in just the space of a few months in my bag and just broke into small pieces with a little bit of flexing.
Luckily, I had some tyre boots made from a new tyre which had been shredded and unusable and used them to get me home.
