Upper manufactured using breathable nylon and micro PU. VTS ventilation system allowing breathability and greater airflow within the shoe. The upper features as well the SPORTECH system, which injects rubber in this piece preventing seams and other rigid materials in the shoe’s upper area. It provides lightness, comfort, greater flexibility and an improved fit to the foot. Its thickness is variable depending on the protection and toughness required by each area. It is made without inside seams favouring complete adjustment to the foot, 360 system, making it a very comfortable and light model. The upper includes reinforcements to enhance its toughness, a stiffener at the heel providing better protection and greater comfort thanks to the last's more ergonomic shape, FIX COUNTER system.