Ordered these and the ones made by Blowfish. BF ones were size 13, and for these I ordered 12.5. The fit on her foot was surprisingly the same as far as sizing, so I guess JS runs a bit big, but I also found for the pricepoint that these were cheaply made. I own a pair similar to these from JS in an adult size and love them, but these felt much lower quality like they would not hold up from everyday wear. Kept Blowfish pair and sending these back.