Giro Atmos

The best in the Giro lineup this helmet was used by Lance Armstrong on the tour de France and is one of the lightest helmets on the market. Great for long distance cycling as it's easy on the neck muscles. Just ask our CEO who used it for the 264 mile cycle leg in the Ultraman. Fit System: Roc Loc�4 Construction: In-Mold Ventilation: 26 Vents, Wind Tunnel� Features: RibCage�,Helmet Pod Weight: 9 oz. / 256 g. Colour: Black SIZES: S (51-55cm / 20-21.75�) M (55-59cm / 21.75-23.25�) L (59-63cm / 23.25-24.75�)