So these sizes (kid, teen, adult) are kind of ridiculous on their own, and combined with the different international systems even more. If you look at the tongue of a pair of a pair of sneakers for example, sometimes there will be four different numbers for international markets.

I wish they simply measured clothing in centimeters, and all the complexity could be left behind.

DJT would slap 86% tariff on any imported good only shown sizing in centimeters so this better be inches :)

>I wish they simply measured clothing in centimeters, and all the complexity could be left behind.

Funny you should mention shoes, because this is exactly what european shoe sizes are. It's really just a case of, yet again, Americans stick with an ass-backwards system (inches/pounds/feet, fahrenheit, etc.) when the rest of the world has settled on something much more logical and reasonable.