Giro Eclipse Spherical Bicycle Helmets

The Eclipse Spherical is Giro’s fastest and coolest aero road helmet to dateengineered for performance in road and gravel racing without sacrificing comfort or protection.

Its aerodynamic profile, advanced ventilation system, and Spherical Technology powered by Mips make this helmet the ideal choice for cyclists who demand the best in speed, airflow, and safety.

Aerodynamic Performance

• Sleek shell design actively reduces drag across multiple wind angles

• Wind-averaged drag testing shows Eclipse is:

  • 14 seconds faster over 100 miles vs. leading competitors

  • 1 minute faster than the Giro Vanquish at 25 mph

Advanced Cooling System

• 14 Wind Tunnel vents with deep internal channeling

• Cooling power rivals the Aether SphericalGiros benchmark for ventilation

• Tested with the proprietary Therminator headform to validate airflow efficiency

Spherical Technology & Safety

• Ball-and-socket Mips system allows outer liner to rotate independently in crashes, redirecting impact energy

• Progressive Layering with Nanobead EPS foam for optimized protection in varied impact scenarios

• Full lower Hardbody coverage for added shell strength and durability

Fit & Comfort

• Roc Loc 5 Air fit system provides micro-adjustable stability and comfort

• Ionic+ antimicrobial padding absorbs moisture and fights odor over long rides

• Reflective decals increase low-light visibility

Specs

• Weight: 270g (Size Medium CPSC, CE)

• Certifications:

  • US: CPSC Safety Standard (Age 5+)

  • EU: CE EN1078 Compliant

Incremental Gains, Exponential Rewards

Built to outperform, the Eclipse Spherical blends elite-level aerodynamics with superior cooling and protection. Whether you’re riding pavement or gravel, its the ultimate upgrade for serious cyclists.

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 below.