Depends on the brand and what the purpose of the shoe is. It's been my experience that different brands have different sizes just like human clothes and shoes. I just go with knowing my boys measurements, read the labels and go with the size that would fit him.
Made up example...
If I were to say Kaji's foot measurement is 1 in across, and 1 inch long. Brand "X" has that labeled as M but brand "Y" is S. So really it depends.
__________________ Littlest JakJak 
We miss you Kaji 
Last edited by DvlshAngel985; 01-03-2011 at 06:40 PM.
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