Poverty limits the imagination of many people. A pair of good artificial leather sports shoes can buy several baskets of leather shoes. Then why don't sports shoes use genuine leather? Let me tell you, sweaty dermis, once salty, will become hard, aging and damaged. What other old people who have mastered old knowledge should not come out and answer shamefully? At present, the advanced tanning technology, the strength of artificial leather has already surpassed that of real leather, and nano-manufacturing and ventilation technology are the best choices for sports shoes. The key is not to deform when it meets water, of course, not including the early stage.