From the Runners World news article:
Kids, from toddlers to middle-schoolers, run even when they’re not trying to run—they jump, climb, play, and run some more. And all that running leads to serious wear and tear on their footwear. From recess, to their first 5K, to joining the track and field or cross country team, those little feet need footwear to take them there.
Read more at the link: