This is the outer surface of the leather, using the natural grain of the leather. Many effects can be achieved by smoothing the leather grain, creating several surface subcategories. Among these leathers, Nappa is the most common finish for smooth leathers. It is created by spraying paint and sometimes wax or resin onto the tanned surface to protect the leather from staining and rain.

Suede is made by polishing the inside (flesh side) of the leather to create a velvety surface.

The leather is dyed in a drum, absorbing the dye into the leather rather than spraying it onto the surface. This creates a softer finish because the dye penetrates the entire thickness of the leather. A slight color cast in this leather is not a defect.
This finish is used to create interesting patterns and shading. The finish is applied to the surface of the leather and is created by airbrushing, blending several shades of the same color for a unique effect. Since the antique finish is only on the surface, the leather appears to have been worn for years. Slight colored shading is a characteristic feature of this type of leather.
They are pliable, natural-looking, and have a very soft feel. They are used in high-end products because all processes, starting with raw hides, are initially relatively expensive. They are called natural because there is no special finish on the leather's surface.