Details The Giro Vanquish™ MIPS® Helmet is the pinnacle of high-performance road cycling helmets, featuring the innovative TransformAir design that actively streamlines airflow to reduce drag. Inside the Vanquish is an EPS liner with progressive layering, and Giro's renowned RocLoc® Air system seamlessly integrated with MIPS Technology to enhance comfort and cooling power while providing an additional measure of protection. So whether you're hammering off the front, smashing an Ironman course, or laying down maximum wattage in the dash to the finish line, the Vanquish shapes the wind to work for you. Comes with Magnetic Vivid™shield by Zeiss®. Construction In-Mold Construction with Progressive Layering: In-Mold Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making in-mold helmets lighter and cooler than traditional helmets. Four-piece Polycarbonate interlocking Hardbody shell Fit Roc Loc® Air MIPS: This revolutionary fit system adds a new dimension to helmet performance by enhancing cooling, as well as fit comfort and stability. Using a patented design that suspends the helmet just slightly off the top of the skull, Roc Loc® Air allows cool airflow to pass directly over your head, further enhancing the performance of vents and internal channeling that exhaust heat out of the helmet. Fit and feel adjustments mimic the Roc Loc® 5, allowing you to easily custom tune fit tension and fore-aft tilt of the helmet in seconds using a single hand. Ventilation Wind Tunnel Ventilation Details TransformAir™ Technology EPS liner with Progressive layering Integrated MIPS® technology Magnetic Vivid™ shield by Zeiss® Stealth shield dock Eyeglass grippers Antimicrobial padding Featherweight webbing Helmet Size Small = 51-55cm/20-21.6in Medium = 55-59cm/21.6-23.2in Large = 59-63cm/23.2-24.8in Weight 305g (10.8oz) without Shield, 355g (12.5oz) with Shield Giro Vanquish Mips Helmet w/ Shield