Are leather shoes of the same size bigger or smaller than sports shoes? How will the size of feet change in the morning and afternoon?

Leather shoes of the same size are the same size as sports shoes. But because the inside of the sports shoes is much thicker than the leather shoes, the inside of the sports shoes

The actual size is smaller than the shoes of the same size.

Feet are slightly smaller in the morning and slightly larger in the afternoon. That's because the bones between the soles of the feet are connected by ligaments, which will grow with the pressure.

Degree. After a day's walking, the ligaments will become longer and the feet will become bigger. After a night's sleep, the ligament will return to its original length.

Feet are smaller in the morning. But the size difference is not big, generally within one third, so it is not obvious.