Giro Aries Spherical Helmet

The Giro Aries Spherical Helmet is a flagship road cycling helmet designed to deliver top-tier protection, ultra-lightweight comfort, and exceptional cooling performance through advanced multi-layer impact technology. Combining aerodynamic refinement with cutting-edge safety systems, the Aries represents one of Giro's most advanced helmets to date, engineered for riders who demand the absolute best in performance and protection.

At its core is Spherical Technology, powered by Mips, a revolutionary ball-and-socket system that allows the outer EPS liner to rotate around the inner liner during certain impacts. This design helps redirect crash energy away from the brain while eliminating direct contact slip planes against the head for enhanced comfort and safety. Supporting this is Progressive Layering, which uses dual-density Nanobead EPS foam to manage both high- and low-speed impacts more effectively than traditional single-density constructions.

The helmet's structure is reinforced by the AURA II Reinforcing Arch, which strengthens the shell while enabling exceptionally large ventilation openings. With 21 Wind Tunnel vents and deep internal channeling, airflow is continuously directed over the scalp to maximize cooling efficiency even under maximum effort. At just 265 grams (size medium), the Aries remains exceptionally light while maintaining the structural integrity needed for serious road riding. Comfort is further enhanced by the DryCore sweat management system and Roc Loc 5+ Air fit system, delivering precise adjustability, improved airflow, and long-ride comfort. Additional features include integrated eyewear docking ports, reflective detailing, and Ionic+ antimicrobial padding for lasting freshness.

Key Features

• Spherical Technology with Mips - Ball-and-socket impact system redirects crash energy while eliminating slip planes against the head
• Progressive Layering Dual-Density EPS - Nanobead foam construction manages high- and low-speed impacts more effectively
• 21 Wind Tunnel Vents with AURA II Arch - Structural reinforcement enables maximum ventilation and cooling at just 265g