Products Description Upper: Full Grain Leather Full grain leather is made from the top split of the hide and ensures top quality. Only the hair has been removed, so the natural surface grain is unchanged. It preserves the hide’s original texture and markings. Full grain has a great durability with the best fiber strength of leather. Lining: Microfibre Microfiber is a soft material and has good moisture conducting properties. Midsole: Integrated Shank Thermoplastic polyurethane (TPU) is mixed with glass fibers to create an impact-resistant material with a high degree of stiffness. Outsole: Leisure.