Giro AEON Helmet is a combination of lightweight, comfort and cooling performance. Giro AEON weighs only 222g in a CPSC approved size Medium. Yet it also provides cooling power equivalent to the most ventilated helmet ever made. Giro AEON maximum ventilation, minimal weight and Zero compromises.

• Recommended use for Road Race, Triathlon, MTB XC Race, Cyclocross, Track Race, Enthusiast Road.

• Thermoformed SL Roll Cage reinforcement, X-static padding, Roc Loc 5 fit system, Slim line webbing.

• EPS liner, Thermoformed SL Roll Cage reinforcement, Polycarbonate shell

• Roc Loc 5 TT fit system provides an entirely unique user experience with an unmatched level of comfort, stability, adjustability and weight savings. With Roc Loc 5, you can easily dial-in both fit tension and adjust vertical position with a single hand. Just twist the dial for a tighter feel on rough terrain, then back it off a notch and relax across the flats or a warm climb.

• 24 Wind Tunnel vents, internal channeling

• Fit Guide: Measuring Tape | Sizing Chart