Upper: CRAZY HORSE leather Washable insole Lining: High breathability 3D knit fabric that removes moisture and heat from the inside of the shoe. High resistance to abrasion. Sole: Dual density polyurethane (PU2D) antistatic, high non-slip capacity (SRC) and durable in contact with petroleum. Shock absorption on the heel. Additional features: Structure structure at the rear for increased stability. CRAZY HORSE Leather: Comes from full grain leather (all skin is intact without any layer being removed) that has been combed and treated with waxy - oily materials to acquire a shiny and dark color. Used to make high quality leather shoes with excellent wear resistance. Due to the hairstyle that has undergone, characteristic traces of scratches, scars or wrinkles appear on its surface without causing damage to the skin structure.