My son is a childs size 10 in all of his shoes, I ordered a 12 for Christmas..... They are TINY it seems like the whole inside is taken up with the wheels in the sole.... I returned them and got a size 1, when they arrived they don't look much bigger.... I can't get him to try them as they are going to be a gift. I will be VERY suprised if they're not too small :-(
Apart from that they are a great shoe, quality looks awesome, cool color etc, its just the sizing issue. Get that right and you'll be stoked with them.