Always Stay Cool. Legendary performance, style and comfort. The Atmos was the first helmet to utilize In-Mold Composite Reinforcement., a breakthrough in helmet architecture that allowed 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 not wonder this helmet continues to be a favorite with road, XC and cyclocross worldwide.