The Right Shoe Size

The right shoe size is an important prerequisite for a shoe to fit comfortably and provide enough space for the foot. It's not just about the number on the shoe. Shoe width, last shape, and cut also influence how a model actually fits. Understanding sizing correctly allows you to choose shoes more purposefully and find the right size more easily.

What does shoe size actually mean?

Shoe size primarily describes the length of a shoe or the foot length for which it is intended. However, for a good fit, this information alone is not sufficient.

Shoe width is equally important. Because two feet can be the same length but different widths. A shoe should therefore fit the foot in both length and in the ball and forefoot area. You can find more information in our guide on [Shoe Widths at Sioux].

How did our shoe sizes come about?

The fact that shoe sizes are not indicated uniformly everywhere today has historical reasons. Over many centuries, different measuring systems developed in various countries.

One of the earliest known systems originated in England as early as the 14th century. Later, further sizing systems developed in Europe and North America. In the USA, half shoe sizes were introduced in the late 19th century, among other things, to allow for finer gradation.

With increasing international trade, this led to a coexistence of various sizing systems. Attempts to establish a globally uniform standard have not yet been universally successful. Therefore, when buying shoes, you will still encounter European, English, and American size specifications.

What shoe sizes are available in Europe?

The sizing system common in Continental Europe is based on the so-called Paris Point. One full shoe size corresponds to an increment of approximately 6.67 millimeters.

In addition, the English and American shoe sizing systems are particularly widespread. Since these systems are structured differently, a size cannot always be intuitively transferred from one system to another.

Sioux offers many models in half English shoe sizes. The finer gradation allows for a more precise choice between two full sizes. With our [shoe size conversion], you can more easily compare different size specifications.

Do shoes of the same size always fit the same?

No. Even shoes with the same indicated size can fit differently. Key factors include the last used, the shoe shape, the construction, and the respective material.

A shoe with a rather narrow cut can feel different in the same size than a model with a more generous forefoot area. Different manufacturers can also interpret sizes somewhat differently.

The size indication is therefore an important reference point – but for the actual fit, how the specific shoe sits on the foot is always decisive.

When does a shoe fit correctly?

A well-fitting shoe offers enough freedom of movement for the toes without the foot sliding forward when walking. The heel should sit securely and not slide significantly out of the shoe. At the same time, the shoe should not press uncomfortably on the ball or sides.

The two feet can also differ slightly in length or width. Therefore, the fit should always be checked on both feet.

If you don't know your current size, you'll find a practical guide to determining the right size in our separate guide [How to measure shoe size correctly].

The right size is only one part of the fit

A suitable shoe size, together with shoe width, last shape, and cut, forms the basis for a comfortably fitting shoe. Therefore, take your time when trying them on and pay attention to how the model feels when standing and walking. This way, you will find a shoe that not only matches the size indication but actually fits your feet.