GIRO IONOS HELMET '08

This is it - the new top-end helmet from Giro for the road market. Lighter, cooler, and stronger than before, with In-Mold construction and 21 huge vents. Roc Loc 4 adjustment allows you to easily dial in the fit.  Size Guidelines:Small: 51-55 cm (20" - 21.75")Medium: 55-59 cm (21.75" - 23.25")Large: 59-63 cm (23.25" - 24.74")Weight: 37 oz. / 1050 g