Giro is the world leader in helmet technology. They innovate while most others are content to follow. The E2 helmet is their top-of-the-line cross-country offering, which means it can handle everything for everyone except for those who need the protection of a full-face helmet. The Giro E2 helmet even looks like it belongs when you take it for a road ride. This bucket has 24 huge vents, the comfy and adjustable RocLoc 4, and an adjustable and removable visor.