(Very serious about footwear. This AUX cord is awesome! It is recommended to watch the 4 minute Elgato Tutorial during the configuration process to see just how much this thing can do. Fast Shipping! Maybe go off of your child?s typical shoe size and don?t bother measuring the foot. Too large and fragile to carry around. The sound wont knock Bose out of the water, but for the forty dollars I paid, it is good, and an outstanding upgrade from my $20 pair. I will probably order another in a smaller size and just rotate between the two. The problems are mostly things that should have been caught by releasing a few prototypes to a handful of gamers. I highly recommend