1. Genuine leather shoes have many advantages, excellent elasticity and toughness, good air permeability, comfortable and soft wearing. Durability and feel are often good, with deodorant function, not easy to deform.
2. Genuine leather shoes are made of animal skins. The reason why they are soft is similar to sponges. The fundamental reason is that when tanning, grease is introduced into the animal skin to form an oil film covering the surface of the fibers in the skin. A layer of oil film is used to separate the fiber surface in the skin.
In this way, between the inner fibers of the leather, there will be sponge-like fiber pores (of course, small, and not as regular as a sponge), which can slide on each other. When the oil film reaches a suitable thickness, the friction force between the internal fibers of the leather is equivalent to the friction force of the oil molecules, so the leather will be very soft, especially comfortable and soft to wear, so the first choice for protecting your feet is leather shoes.