I have had a couple incidents of partial fender destruction caused by the tire picking up a stick & carrying it into the fender. On one occaision, the stick caught on the bottom rear of the front fender & rolled it up until it jammed against the stays making a very effective brake that brought me to an immediate halt. The plastic fender broke into several pieces when I tried to unroll it. This would have been much worse except I was riding uphill at only about 8MPH at the time. The Esge fenders now have a breakaway feature that should prevent this type of accident. Don