Consider the Sweet Protection Rocker Fullface Helmet if you regularly charge waterfalls and rapids that would make sky divers and bull riders nervous. This is Sweet Protection"s most protective helmet, and it"s enough for the biggest challenges in the river. Sweet used a combination of thermoplastics and carbon fiber to make the shell softer at the crown and more rigid toward the periphery. Coupled with the high-impact, low-weight EPP foam inside, this material combination provides the most versatile impact protection from hard, low-speed hits and small, high-speed bonks. You get a lid that fits close, drains quickly, adjusts in the blink of an eye, and keeps your skull and jaw safe when you"re ripping through rough-and-tumble whitewater.