Shoe size 40 (that is, European size) corresponds to American shoe size 7, that is, size 250mm, size 40 in Europe, size 7 in the United States, size 6 in the United Kingdom, and the area code: European code EUR, American code US, and British code UK.
It is suggested that it is best to measure the foot size in the afternoon, because the foot will swell slightly in the afternoon, and the determined size will be the most comfortable to wear at this time. People's left and right feet are basically symmetrical, but there will definitely be subtle differences in size, so you should choose a bigger one when measuring.
Precautions for shoes
Heels should not be too high: heels should not exceed 5cm, heels should not be too small, and toe caps should be loose. Comfortable flat shoes should be prepared in the office, and high heels should be changed frequently to relieve local fatigue.
In addition, it is best for the elderly to choose high heels to protect the parts with poor blood circulation such as legs and feet. Diabetic patients should not choose cloth shoes; Pregnant women should choose soft flat shoes.
The arc of the heel and sole depression must fit the foot, and the ankles and toes should not touch the shoes. The front foot should have a certain swing space, and the back heel should not swing.