Does the '5–10mm manufacturing deviation' written in the detailed guide mean that the shoe size changes?
While the figure of 5–10mm specifies the margin of error that can occur during the handmade shoe manufacturing process, it is not clarified whether this refers specifically to the foot length measurement or to deviations in specific parts such as the heel or circumference.
In shoe sizing, 5mm is usually the standard that divides a single size. Therefore, coming across the phrase of a 5–10mm deviation can make one confused about whether the foot size changes significantly. In the detailed descriptions of various products, Blanc Sur Blanc states that an error of around 5–10mm may occur due to the nature of the handmade shoe process. However, detailed standards on whether this figure refers to the foot length itself or is an error encompassing heel height or circumference measurements have not been presented.
















