The vagaries of nature, the temperature, all localities have their own spring, summer, autumn and winter. For example, China's Spring City in Kunming, the lowest winter temperatures average in general about 8 ℃, and the Harbin winter minimum temperature in the general average below -25 ℃. In this way, the same season, because of which not the same latitude, winter clothing in general do not like, with greater latitude differences, the differences are greater costumes. Clearly, people's clothes in general are the two factors, one is seasonal, and the other is latitude.

As our definition of the snow in front of the natural environment that is, in the north of latitude 41 ℃ winter natural environment. So, can be given the meaning of Ice and Snow apparel.

The so-called Ice and Snow apparel is that people in the natural environment under the Ice and Snow wear clothes, shoes and hats collectively. Its main function is to meet the needs of the body insulation in winter.

Lifestyle insulating ability, and the definition of science, both dressed Index (Crowe). The English name is Clo, is the English word "clothes" (Cloths) of the first three letters. Crowe is a table clothes for the temperature difference between 0.18 ℃, each square meter area on the hour through a kilocalories of heat insulation level. Quite the indoor temperature of 21 ℃, wind speed at 3 m / s following, relative humidity of 50 percent of the cases, the sit-in by people who need clothes thickness (of insulation).

China's winter in January, the area south of the Yangtze River about 3-4 Crowe, Commissioner of the region needs about 4-5 Crowe, Jilin in the north about 6-7 Crowe. If one needs to wear Crowe 0.64 cm thick clothes to calculate, living in the natural environment under the Ice and Snow people, needs to wear about 4.5 cm thick clothing.

Some people on the planet from the equator to the polar zone is divided into seven clothing. On average temperature in winter at -20 ℃ to -10 ℃ the cold climate is temperate with four levels of clothing. And polar cold weather clothing has been unable to meet the general needs to be specially produced.

In this way, we can be more scientific point of view, given the definition of Ice and Snow apparel:

The so-called Ice and Snow apparel and clothing index is more than 6 Crowe, adapted to the fourth floor of clothing with symbols of snow, Ice and Snow to the natural environment in the apparel.