The Ionos is the most technologically advanced road cycling helmet Giro has ever created offering unparalleled style and ground breaking ventilation 21 enormous Wind Tunnel vents and optimally placed internal exhaust channels maximize air flow across your head, ensuring that you stay cool on the hottest days and over the longest climbs 15 percent better ventilation than the class leading Atmos A visible weave of composite called In-Mould Composite subframe, runs throughout the helmet liner and around the vents The use of composites in the sub-frame provides incredible structural support, impact dispersion and resistance to penetration Allows great big vents without compromising protective capability X-Static fabric pads are woven with pure silver fibres and kill 100 percent of bacteria Inhibits growth of odour-causing bacteria and fungi within 4 hours after aride! Helps you stay cooler in summer and warmer in winter RocLoc 4 fit system
Certification: CPSC Bicycle Safety Standard Certified
Size (head circumference) S(51 - 55 cm), M(55 - 59 cm), L(59 - 63 cm)