37 degree constant temperature underwear This is a special kind of heating fiber. The whole dress is made of imported super elastic heating fiber and seamless knitting machine. It will never spin or pilling. The principle of keeping warm is to use the heat released by the human body and then return it to the human body, so it is impossible to heat yourself.
First of all, constant temperature underwear is a gimmick, just a means of enterprise and sales. With the present technology, it can't reach this level. Thermostatic underwear generally advocates the use of self-heating materials. CCTV's "Is it true" column once did an experiment of self-heating underwear, and it was found that this kind of underwear could not heat up.
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Classification of thermal underwear
1: pure cotton underwear, the most traditional single-layer underwear, is soft and breathable, but it is more suitable for spring and autumn because of its light texture.
2. Fiber thermal underwear is made of cotton, wool, acrylic fiber, polyester and other fabrics, and wadding such as cotton, wool and camel hair is used as filler in the interlayer, which has the advantages of good air permeability and moisture conductivity; The disadvantage is that it looks bloated and heavy.
3. Space cotton thermal underwear, made of cotton, wool and chemical fiber. And a metal film is coated on the inner interlayer. Its advantages are relatively warm and radiation-proof; The disadvantage is that the air permeability and moisture conductivity are poor, and it has a silky sound when worn.
4. Interlayer has thermal underwear made of ICCP material, which is made of cotton, wool, silk, lycra and other fabrics. The ICCP material of interlayer has also changed from initial non-porous to porous to reticulated membrane. The fixation between fabric and interlayer is also from gluing to special process compounding.
5. Comfortable and healthy thermal underwear, which claims to contain far infrared fiber and more than 20 kinds of trace elements. Far infrared rays can transform energy in the body and regulate immunity.
6. Silk thermal underwear, the traditional silk thermal underwear (commonly known as silk cotton-padded jacket), is filled with silk, which is green and healthy, light and soft, smooth and warm. In addition, it has strong thermostability, air permeability and moisture permeability, so it is warm, light and comfortable to wear, and the silk cotton-padded jacket can prevent mites, bacteria and mold.
Baidu encyclopedia-thermal underwear