The sport of paddling a kayak in whitewater. The advantage of a kayak is that you can right yourself if you flip over. Successfully righting yourself and your kayak after an unintentional capsize is known as a combat roll. Roll is short for eskimo roll, the method you use to un-flip yourself. If you don't have a good roll, you shouldn't paddle whitewater above class II because you will swim a lot. Swimming in class III and above whitewater can be dangerous. Whitewater Kayakers all wear PFD's, sprayskirts, and helmets (unless they're really stupid). Many kayakers like to wear noseclips to avoid getting nasal enemas. Whitewater is usually cold, so wet suits, paddling jackets and drytops are often worn as well.