Leather shoe upper leather materials are mainly subdivided into the following categories:
Top leather: Leather with intact grain pattern, natural pores and textures clearly visible.
Two-layer leather: The second layer of leather cut off during the production process has no grain pattern. Instead, a fake grain is created through different decoration methods to imitate the leather of full-grain leather.
Film leather: leather with a pre-made coating film glued to the leather surface.
Suede leather: The velvety leather is polished on the grain, with fine hair and faint pores.
Two-layer suede: Leather that has been frosted on the two-layer leather.