Giro hex helmetthe hex combines rugged style and durability with the coverage and ventilation you want on the trail its stocked with all the features you need for a day on the dirt including the comfort and stability of roc loc 5 and giros patented pov visor that doesnt require any tools for adjustment features pov adjustable visor with 15 vertical adjustment construction in mould eps liner polycarbonate shell fit system roc loc 5 ventilation 21 ventstechnologiesin mould