The new commuter helmet from Alpina gets you closer to your goals. All of your goals. Thanks to a number of new technologies, the Altona sets new standards when it comes to safety, ventilation, comfort and integration. The high-performance material Koroyd ensures maximum protection. The stable and extremely lightweight structure consists of a multitude of small tubes that are thermally welded together. In the event of an impact, they crumple and absorb energy. Due to the stable design, Koroyd also allows for much larger openings in the helmet surface, which guarantee excellent ventilation. Ventilation ducts guide the air inside the helmet along your head. With the Altona, the ventilation management can also be actively regulated by a sliding upper shell. Whether in the cool morning or in hot rush hour traffic, the ventilation is always optimal.