Why do the grain and texture on the inner side of the belt vary slightly from part to part?

While the outer surface is smooth, refined Italian cowhide, the inner side is a raw edge where the fiber grain of natural leather is exposed as it is^[1][2]. This RE RHEE belt is made by cutting a single layer of leather directly, without lining it with another fabric^[3].

Unlike belts that generally glue multiple layers of leather together to make both the inside and outside smooth, using a single layer of whole leather results in variations in grain and texture because the density of the fiber structure on the back side of the leather varies across different areas of the cow. Therefore, an uneven texture on the inner surface is not a finishing defect, but an inherent characteristic that appears when using the raw natural leather hide without artificial coating^[4].

Instead of covering the raw cut surface, a finish is applied along both edges where friction against clothing occurs to prevent the leather structure from fraying or fuzzing^[5]. This finish helps the belt slide smoothly without catching on fabric when pushing it through pant loops or fastening the buckle.