The Rossignol SPEED 120 BLACK ski boots are made for experienced skiers who have wider feet. Comfortable width 104 mm. The liner is shaped to adjust to the shape of the foot and it is insulated with Thinsulate for thermal comfort. The Sensor Matrix technology makes the skeleton lightweight and guarantees excellent performance. The hardness of the skeleton is adjustable. The skeleton at the instep is softer, making it easier to put on and off. They provide comfort, insulation and support.