The Giro Phase Helmet is lightweight, stylish and durable enough to handle your favorite single track trails. While riding in the mountains you want your helmet to protect you at all costs while not being uncomfortable or loose fitting. Thanks to Giro’s Roc Loc 5 tension system, the Phase Helmet will stay in place over bumpy terrain while also allowing for quick on the fly adjustments. The shell of the helmet features 24 vents to keep your head cool during warm bike rides. The front of the helmet features a snap-fit visor that shades your eyes from bright sunlight and can be removed if not needed. The Giro Phase Helmet is offered in a variety of colors and three sizes. Please refer to the attached size chart to help determine the ideal fit for you.