In recent years, when you go to buy pantyhose, you always find such numbers on the tags: 600D, 800D.

It seems that both manufactures and consumers are paying more attention to details than before.

When you compare them, it is easy to tell that larger the number, thicker the hosiery.

But here's the question, what does the letter "D" stand for? And what is the proper choice for a certain season?

The differences among pantyhose in various shapes is the weight and thickness of yarn measured by "denier". "D" is the abbreviation of the term.

Higher the denier, more opaque a pantyhose will be.

Often, denier of the hosiery for summer is below 20, and for autumn and winter it is above 100.

Some young people tend to show the beauty of their legs even in cold days.

However, traditional Chinese medical theory considers such behavior as harmful, as there are many main and collateral channels on legs.

For example, two channels that can affect the function of your gall bladder are on your legs. Chinese medical theory believes the malfunction of the organ caused by coldness could be a cause of excessive fat accumulation on legs.

The more reasonable choice seems to hide rather than expose legs in cold wind if you do not want fat to accumulate on them. Then a proper pantyhose is a must-have.

Here are the detailed denier index for each season and temperature for your reference.

Below 20D: 5D, 10D, 15D

They are sheer ones, for hot summer days. For some formal meetings, wearing a sheer pantyhose is a basic requirement. Beware the black and "fishnet" ones, which might cause some misunderstandings if you wear them at daytime.

Above 50D: 80D, 150D, 200D

Choices for early spring and autumn when it is still cold in the morning and evening.

300-800D

Such pantyhose is for late autumn and early winter when the temperature is often 0-10 degrees Celsius.

Above 1,000D

Hosiery above 1,000D can be very thick and the one above 1500D is often as thick as long johns.