This belt is 2 layers of top-grain stitched on the edges.  It may be laminated too; however, the leather was very dry and the layers were not stuck together.

For a very small, thin person, this belt would look nice and allow the use of your own buckle.

For any larger person, this belt would stretch, tear, and fail because it is not full-grain leather.

Full-Grain means it's one, thick piece of leather.

Top-Grain means they use a slicer to split the sheets of leather into thinner sheats.

Top-Grain is common because it's often the "waste" leather used when making large sheets of uniform thickness.  Laminating two layers of top-grain together does not give you any level of shear strength between the two layers.