I had Christophes and the slipped and slipped until they broke. Then I had Campy single laminated straps, broke quicker than the Christophes. Then ALE single laminateds, they are super sweet and never broke, slipped or anything else and were probably more comfortable than the Toshis I got next. The Toshis, if I still rode with clips/straps, would probably last me 2 years. They do wear if you are the type to tighten them down all the way, which is kind of the point. The teeth on the buckle will wear down the leather.