Why don't cheap shoes wrinkle? Why are beautiful shoes?

If leather shoes have deep wrinkles, they look a little pitiful, and I personally feel a little uncomfortable. But some people think that wrinkled shoes are bad leather. Some people even think that good leather shoes won't wrinkle at all. This is completely ridiculous.

First of all, leather is bound to wrinkle, and there is no skin that will not wrinkle. Good skin wrinkles are really easier. But here I need to explain that the reason is generally that the lines are thinner, so it is not easy to produce big wrinkles on the vision. But a little closer, it's all tiny wrinkles.

It must be said in principle that leather fibers are stretched and shortened, so that periodic fatigue completely relaxes the fibers, so they are folded. Based on this sentence, you know that if you can make leather taut again, it won't wrinkle.