Legendary performance, style and comfort. The Atmos™II utilizes our Thermoformed SL Roll Cage reinforcement, a breakthrough in helmet architecture that allows greater ventilation without compromising a helmet’s integrity. The compact shape offers matchless style, and features the sure feel of a Roc Loc ® 5 system that cradles your head comfortably and securely. It’s no wonder this helmet continues to be a favorite with road, XC and cyclocross riders worldwide.

 

• Features - Featherweight webbing with Slimline buckle, Roll Cage™ Internal Reinforcement
• Construction - In-mold Polycarbonate Shell with EPS Liner, Thermoformed SL Reinforcement

What is In-mold? Giro's in-mold construction process fuses the helmet’s outer shell with its impact-absorbing EPS liner during the molding process, making the liner literally a part of the helmet. This fusion process reinforces areas around vents and ribs, creating a one-piece ‘exoskeleton’ that allows the helmet to be lighter, more durable, and better ventilated than traditional designs. 
See video below:

Fit System - Roc Loc® 5

What is Roc Loc® 5? After more than two-years of development, Giro introduces Roc Loc 5. This groundbreaking 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. Even with these remarkable features, Roc Loc 5 is still nearly 40-percent lighter than its popular predecessor, Roc Loc 4. 

• Micro Dial: The heart of Roc Loc 5 is this ratcheting, micro-adjusting dial. A simple, two-finger twist of the Micro Dial opens or closes the retention system and each click is audible. 

• Three-Position Bracket: It’s never been easier to change vertical positions and fine-tune fit. We incorporated a three-position bracket that features 15-millimeters of up/down movement. Like the Micro Dial, this system can be adjusted without removing the helmet. Carefully-crafted ergonomic arms are shaped to be as comfortable as possible, yet work 
• Dual Pods: These two panels are designed to firmly grasp the back of your head while comfortably cradling the occipital lobe. 

• Strap Baskets: With Roc Loc 5, your helmet straps are always right where you need them. Not to mention this strap basket brings a new level of comfort.
See video below:

Ventilation - 26 Wind Tunnel Vents with Internal Channeling

Giro Helmet Sizing Chart:

 

More About The Manufacturer Giro

Giro is a U.S. manufacturer of helmets, sunglasses, goggles and softgoods for cycling, skiing and snowboarding. The company was founded in 1985 by Jim Gentes and is headquartered in the Santa Cruz, California area. Giro is part of Easton-Bell Sports. Dozens of models are produced under both brands.

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