There is no universal system for shoe sizing.
What looks like the same number rarely means the same thing.
A size 40 in one brand can feel like a 41 in another.
That is not an error. It is how the system works.
Most European sizing is based on the length of the last — the form the shoe is built on — not the exact length of the foot. That length already includes space for movement.
Other systems measure something else entirely.
Some are based on foot length, others on the inner space of the shoe. These are often treated as if they were the same. They are not.
Even official standards acknowledge the problem.
At best, size conversions are only approximations.
Sneakers add another layer.
They are built for immediate comfort, often with more padding and internal volume. Many are developed in US sizing first and then converted to European sizes. The result is a different fit, even when the number looks the same.
Boots follow a different logic.
They are built on a more defined last, with less internal padding and a material that shapes over time. The fit is more direct from the start.
This is why it is common to wear one size in sneakers and another in boots.
If you wear a 39 in our boots, it is not unusual to own sneakers in 40 or even 40.5.
Neither is wrong. They are built with different intentions.
Our boots are made on a traditional unisex last.
We recommend you always start from your normal choice of non-sneaker European size.
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