The world of all-mountain riding demands unwavering focus, so you can't be distracted by a helmet that doesn't fit right or moves around on the roughest trails. Giro's Xen, with its Wind Tunnel ventilation, feathery weight and secure Roc Loc 4 retention system, is perfect for every trail and every ride. Plus, the extended coverage in the rear of this lid delivers added safety when you dismount unexpectedly. And, the color-matched and adjustable P.O.V. visor provides excellent protection and visibility.