This is a grain leather that has been slightly brushed on the surface to create a very fine velvet-like appearance. The texture of nubuck is finer than suede.
About Orthotic Shoes:
Orthotic Shoes are shoes that contain orthotics, which are removable orthopedic insoles that help cushion and stabilize the foot. Orthotic Shoes may also refer to items designed with additional room to insert Orthotics.