There is a kind of leather called modified leather. The modified leather is processed and coated on the leather surface, and it can be pressed with different lines. Some of the coated leather materials are thick, with poor wear resistance and air permeability.

Upper leather is the raw material for making shoes. On the surface of shoes, there are many raw materials for upper leather, including real leather upper leather, PU upper leather, PVC upper leather, etc.

The smooth leather in leather is used in many leather products because of its good tensile strength, dirt resistance, wear resistance and good air permeability.