The functions of the holes in the front of men's long johns are as follows:

First, distinguish the front and back sides. Men's long johns have no style. They are basically the same on the front and back. In addition, some trademarks will On the side of long johns, it is difficult to distinguish the front and back, so adding a hole makes it easy to distinguish the front and back.

The second is to differentiate between genders. At first, the styles of men's and women's long johns were basically the same, so in order to better distinguish the gender when purchasing, this hole was designed in the front of men's long johns.

The third is to increase heat dissipation. Due to physiological structure problems, the male lower body needs more space, otherwise it will easily become stuffy and cause diseases over time, so designing a hole in the long johns can increase the heat dissipation. Comfort.

In addition, the holes in the long johns can also be used to dry clothes, so as to avoid stretching the sides of the long johns, which seems to have many uses. In addition, some men's long johns also have button designs on the holes. Most of them are for older people. Generally, as you get older, you are prone to frequent urination and other problems, so the openings of the buttons are generally larger, which is more convenient. The toilet can also prevent deformation.

The origin of long johns

The earliest long johns originated in North America. The earliest prototype of long johns is considered to be a popular "tight breeches" in the 15th century. They were worn with pointed trousers. Toe shoes were very popular at the time. Later, people discovered that wearing this kind of jodhpurs was very comfortable for sleeping, so the function of jodhpurs gradually changed into "pajamas", which is today's long johns.

In the 18th century, the thermal insulation facilities in North America were not perfect. In order to better keep warm, the long johns worn by people were designed to be one-piece, which not only kept warm but also shaped them. But over time, people discovered that although this kind of jumpsuit keeps warm, it is very inconvenient when working.

So in the 20th century, a Canadian designer, Frank Stanfield, developed a split design for long johns, and also invented autumn clothes. This was also the origin of modern long johns, and Stanfield also invented it. Known as the "father of modern long johns".