The mesh upper of my Ghost 13s has shredded at the flex points of the toe-box, after just a few months of use. I run a road 5k once or twice per week, at best, and use the shoes for nothing else. Customer Service (and their mysterious 'Footwear Specialists') are claiming I've used the shoes for cycling (I don't even own a bike) and refusing to admit an issue with their product. I've never bought Brooks before and never will again. Just heartened in a way to see that other reviewers have had the same experience (sorry guys).