How to measure your size – Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the Size Guide. Note: Make sure the helmet fits with a little room when the fit system is loose, and sits low enough to protect your forehead without hindering your vision. Once you’ve got the right size, you can adjust the fit.
Engineered for serious cyclists who demand precision and protection. The Giro Helios Spherical combines cutting-edge design with high-performance innovation, delivering advanced safety technology for road cycling, gravel adventures, and multi-terrain exploration. Built for core riders and adventure seekers who refuse to compromise on quality or style.
KEY FEATURES
Spherical Technology - uses a ball-and-socket system powered by Mips® that lets the outer liner move independently around the inner liner during impact, helping redirect crash forces away from the brain while avoiding direct contact with rigid slip-planes against the skin.
Progressive Layering™ - combines dual-density EPS foam liners to better handle both low- and high-speed impacts, improving overall energy absorption and protection.
Mips® Brain Protection System - is designed to help reduce rotational forces in certain crash scenarios, improving safety performance while meeting and exceeding strict safety requirements.
Wind Tunnel Internal Channeling - works together with large ventilation openings to guide cool air across the scalp and push warm air out, enhancing overall airflow and cooling efficiency.
Roc Loc® 5 Air Fit System - slightly lifts the helmet off the head to increase ventilation and comfort, while allowing easy one-handed adjustments for fit tension and positioning.
Ionic+® Padding - uses silver-infused material to provide long-lasting, natural odor resistance, helping keep the helmet fresh over extended use.
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