Giro

Aries Spherical Helmet

What Our Gearhead® Experts Are Saying:

“This is Giro’s best road helmet yet—lighter than the Aether, cooler under pressure, and the Spherical tech feels like wearing nothing until the moment you need it.”

The Giro Aries Spherical Helmet redefines premium road protection with a new standard of lightweight design, ventilation, and safety integration. Its advanced MIPS Spherical system features a ball-and-socket interface between two Nanobead EPS foam layers, allowing independent movement to reduce rotational forces during impact—all without sacrificing airflow or comfort.

The Aura Reinforcement Arch fortifies the shell’s integrity while maintaining an airy feel, and Giro’s Roc Loc 5+ Air system ensures a secure, micro-adjustable fit that’s barely noticeable even on the longest rides. Twenty-four vents and internal airflow channels create continuous cooling at any speed, making the Aries ideal for hot climbs and race-day intensity alike.

At just 275 grams, this 5-Star Virginia Tech-rated helmet delivers elite protection with the lightness and breathability every racer craves—crafted for those who ride fast, train hard, and refuse to compromise on safety or style.