What to wear at 0 degrees, large cotton or two cotton?

Two pieces of cotton. Big cotton and two cotton refer to the thickness of shoes. Large cotton is greater than 10 mm, and thin cotton is second cotton. It is just right to wear the second cotton when the weather is zero, because the weather is not particularly cold at this time, and both sides can effectively resist part of the cold. If you wear large cotton, the temperature will be too high.