 Complete the following phrase:  Schumacher, in conjunction with Schuberth, helped develop the first lightweight carbon helmet. In 2004, a prototype was publicly tested by being driven over by a tank; it survived intact. The helmet kept the driver cool by funneling directed airflow through fifty holes. Schumachers original helmet sported the colours of the German flag and his sponsors decals. On the top was a blue circle with white astroids. From the 