Whether cheap underwear can be worn depends on the material. Of course, the material of single-digit underwear will not be particularly good, but it is far from being worn. You can go online to search for underwear fabrics to buy, the price is not expensive! ! What's more, some of them were originally bought by the catty, which was cheap and the quality was acceptable. Bad underwear is poor in material, air permeability and moisture absorption, which leads to wet private parts all day, but as long as you change underwear frequently, it is not a big problem. The fabric is not environmentally friendly, mainly because the raw materials of underwear are not environmentally friendly, which leads to skin allergies in some people. If this happens, you should throw it away and stop wearing it. Moreover, the newly bought close-fitting clothes must be washed first Their components are mainly chemical fibers, which have poor air permeability and sweat absorption when worn on the body. Long-term use will lead to rapid proliferation of bacteria, which is harmful to reproductive health and urinary system infection. Moreover, poor skin can easily cause allergies and itchy skin. It is recommended to buy pure cotton or modal fabrics.