First, weaving technology
At present, many well-known large companies have made great efforts in their own knitting technology of self-heating cotton trousers, mainly focusing on density and breathability. Breathability here does not mean breathability, but whether it can prevent cold air from invading the human body. So the progress of knitting technology has brought the success of heating pants.
Two. Textile material
Heating pants should not only pay attention to knitting technology, but also look at what fabrics, such as acrylic fiber and spandex, and some need to use combed cotton. If the material is better, silk or natural cotton will be used. These are high-quality materials that can be used as self-heating cotton pants, especially silk and cotton, but these two kinds of heating pants are usually more expensive. Because it is a natural fabric, the requirements for weaving will be higher, and the output is not very high, so most of the fabrics on the market are woven with various materials.
Three. Special fever
Now there is also a kind of self-heating cotton trousers on the market, which can be said to be self-heating in the true sense, but some technology should be added, because these trousers need to be recharged. It's like putting a warm baby in your pants. It needs to be recharged every day, usually for three to six hours. The heating effect is good, but the endurance is weak, so if you want to wear heated pants with charging, you must prepare a charger, otherwise it may be worse than a power outage.
The above is the working principle of self-heating cotton trousers sold in the market at present, which is not high-tech, but the warmth retention effect is really good.
Personally, I prefer silk craft and cotton self-heating cotton trousers, which are very comfortable and harmless to human body.