When choosing boots, as a rule, several parameters are valuable:
- foot length (cm): distance between the most protruding finger and most protruding parts of heel;
- foot girth (cm): foot girth in the vicinity of toe, near big toe bones and little toe;
- inner sole length (cm): distance between the most protruding parts in heel and toe inner sole parts;
- boot height (cm): distance from joint of sole and boot material to the highest boot point.
On European territory, according to regulations, there are 12 width groups from 1 to 12 with interval of 0.4 (cm) between points.
In Europe, numerical indications with step of 0.5 (cm) are used for width. In addition, letters are used to indicate width. For example, B is a narrow width, EE is a wide foot.
In practice, in Europe only 3 width groups are considered: Narrow (N), Medium (M) - average, Wide (W). In the USA and England, letters A-F with step of 0.5 (cm) are used to indicate width.
Important: more information on the main brand sizes is available at links below.