Model: RS-X PRMeffect Color: black, grayPattern: logoFastening: lacingSpecification: Running System (RS) - shock absorption and gaitstabilization Material: outer part - genuine leatherouter part 1 - textileinner part - textilesole - syntheticsLeather properties: Leather is a natural material of animal origin, which has its typical properties, such as scars, pigment spots, abrasions or wrinkles.