Why are shoe size numbers consistent but the actual shoe size varies per brand?

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Shoe brands typically use the same number scale, but when you compare the actual size of shoes, the sizes are all over the place. Wouldn’t it make more sense to all agree on a set measurable size to make it easier on the customer to make a purchase?

Example: in US sizing, a 10.5 in one brand is the same as a 10 or an 11 in another brand.

In: 32

8 Answers

Anonymous 0 Comments

Sorry to shatter your illusions, but shoe sizes are not necessarily the same inside a brand either. They can vary based on which factory and similar things, but even that does not mean so much…

My worst case was one morning not too many years ago (back when Adidas NMD was the hottest thing), I had queued in-front of a store. I bought two identical shoes in different colourways. The first fit like a glove, and I told the clerk I’d take the other without needing to try it on. He told me I ought to, and he was right. It deviated by a full size…

The real pro tip here is, check the Japanese sizing. That’s the cm length of the shoe. Then the only thing that can make a variance is the model, and the clerks will usually be able to help you with that. Some run slim, some are low, some are wide, etc. Who knows what you are!

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