The drop-test speed for impact energy absorption of the Snell standard, considered the strictest in the world, is about 17mph. Therefore, the amount of energy in an impact exceeding 17mph cannot rely on absorption ability alone. As we all ride at legal speeds well beyond that threshold all the time, Arai focuses on the helmet’s ability to slide across surfaces and glance off objects as much as possible to reduce impact energy getting into the helmet. Check www.youtube.com/watch?v=1QZZAvmoXZE to