My 9 year old son wore these shoes for only a week when the black on the toe started to wear away; and not from wearing while riding bikes, playing sports, or any other rigorous activity-just normal everyday recess and school. I would expect a lot more durability from a trail running shoe. The shoe doesn't have any actual holes in them and it's now been 4 months, but they looked like they were a year old only after a week or so.