does not hold up well, but you wouldn't know because they are always coming up with new styles customers buy before they could wear out. I have a pair of the trainer's Heathe black.... very hard material and fabric near shoelace is coming undone. My spring blue trainers got a hole in the right toe frabic after 8 months. Horrible for running. My swirls are barely used so they still look new. Going back to reebok trainers. Mess Nanos 4.0 :(
