The aerodynamic Eclipse Spherical is Giro's most sophisticated, stylish, and lightweight aero road helmet, and it's crafted with Spherical Technology powered by Mips®, so you can ride with more comfort and an additional layer of protection. Transform Air technology: Streamlines airflow to reduce drag across multiple wind angles while maintaining aero performance in sprinting positions 14 Wind Tunnel vents: Active vents and internal channels pull cool air in and push heat out Spherical Technology™ powered by Mips®: Ball-and-socket design redirects impact forces and reduces rotational energy Progressive Layering™: Dual-density EPS foam manages both high- and low-speed impacts Deep internal channeling: Enhances airflow for efficient cooling and heat exhaust Roc Loc® 5.5 Air fit system: Suspended design boosts airflow and allows quick one-hand fit and tilt adjustments; reflective details improve visibility Ionic+® padding: Permanent silver-based odor control keeps the helmet fresh Weight: 270 gr. (size M) Material/Composition: 42% EPS; 25% PC; 15% Nylon; 5% Polyester; 4% POM; 2% PU; 7% Fiberglass