The characteristics of PU material are: heat preservation, wear resistance, and lightness (about 1/2 of the mass of rubber).
PU is the lightest and most wear-resistant. Of course, it is also the most expensive. The soles made of PU material are easy to recognize and are very light in the hand. The holes on the back of the soles are round. PU is the abbreviation of Polyurethane, and the Chinese name is polyurethane, which is abbreviated as polyurethane. Because, by simply modifying the formula, different physical properties such as density, elasticity, and rigidity can be obtained. At present, it has been widely used in the shoemaking industry. PU soles are low-temperature molded soles. The characteristic of PU bottom is that it is light, but it should not be exposed to water. When it comes into contact with water, a chemical reaction will occur and the layers will be corroded away.
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