Fully certified for racing, and featuring the innovative Race Lock turnwheel adjuster for a completely secure fit at very high speeds, the Skull Dura X Mips gives comfort that keeps your focus on racing. Shaped for an even fit over the whole head, the helmet gives the kind of comfort that lets you forget it's there, so your focus stays firmly on racing. Extra protection comes in the form of a multi-impact EPP liner. Mips provides increased rotational impact protection.