The Giro Helios Spherical Helmet is a high-performance road and gravel helmet designed to deliver advanced protection, cooling efficiency, and precise fit for demanding rides. Built around Giro's Spherical Technology powered by Mips, it uses a ball-and-socket design that allows the outer liner to move independently of the inner liner to help reduce rotational forces during impacts. Progressive Layering enhances impact management across different crash speeds, while 15 Wind Tunnel vents and internal channelling maintain consistent airflow. The Roc Loc 5 Air fit system improves stability and cooling at the same time, supported by antimicrobial padding that manages moisture and long-term freshness.Key Features and Benefits:Spherical Technology powered by Mips ball-and-socket design: The helmet's outer liner rotates around the inner liner during certain impacts to help redirect rotational forces away from the brain. This controlled movement reduces transmitted energy and supports more effective protection during angled crashes.Progressive Layering dual-density EPS construction: Two EPS foam densities are used to manage both high- and low-speed impacts. This spreads impact energy more efficiently across different crash scenarios, helping provide consistent protection across varied riding conditions.Integrated Mips Brain Protection System: Designed to reduce rotational motion transferred to the head during impacts by allowing controlled movement between helmet layers. This helps limit forces associated with certain crash dynamics and supports improved safety performance.15 Wind Tunnel vents with internal channelling: Large intake vents work with internal airflow channels to move air across the scalp and exhaust heat out of the rear. This regulates temperature more effectively and helps maintain comfort during sustained efforts.Roc Loc 5 Air fit system: A suspended retention design lifts the helmet slightly away from the head to increase airflow while maintaining secure positioning. One-hand adjustment allows quick tuning of tension and fore-aft tilt for stable, personalised fit control.IONIC+ antimicrobial padding: Silver-infused padding resists odour-causing bacteria while absorbing sweat efficiently. This keeps the helmet feeling fresh over repeated rides and reduces moisture build-up during long sessions.Optimised ventilation structure: The combined vent layout and airflow architecture support steady cooling without compromising structural integrity. This helps maintain comfort while preserving protective performance.Lightweight, performance-focused construction: Carefully balanced materials reduce excess weight while maintaining durability and protection standards. The result is reduced fatigue over longer distances and consistent comfort throughout extended rides.Reliable protection, stable fit, and temperature control sit at the centre of helmet choice for serious riding. The Helios achieves this through its integrated safety architecture rather than relying on a single feature. Spherical Technology works alongside Progressive Layering to manage different impact forces, while airflow systems and fit adjustment operate together to maintain comfort without pressure points. This coordinated design supports sustained focus and reduces distractions caused by heat, movement, or inconsistent fit.The Giro Helios Spherical Helmet brings together proven safety technology, efficient ventilation, and refined adjustment in a single, well-balanced design. It is a strong choice for riders who value dependable protection and long-ride comfort, making it a practical upgrade for road and gravel setups alike.