Giro Synthe MIPS Helmet



The Giro Synthe is the pinnacle of road helmet design, combining the performance gains of an aerodynamic profile and light weight with great cooling power to enhance rider comfort and efficiency in road rides and races. The compact form slips through the air with ease across multiple yaw and head angles, and offers greater cooling power than the Aeon. Key features include the Roc Loc® Air fit system with 2-way fit tuning and Aero Mesh Panels with a dedicated port for securely docking sunglasses as you ride. Synthe MIPS models are available with the Multi-Directional Impact Protection System. We believe MIPS can redirect energy and provide more protection in certain impacts.


  • Weight 270g (CPSC Medium)
  • Featherweight Webbing with Slimeline buckle, Roll Cage internal reinforcement, Ponytail compatible, MIPS equipped
  • In-mold polycarbonate shell with EPS liner, Thermoformed SL reinforcement
  • Roc Loc Air Fit System
  • 26 Wind Tunnel vents with internal channeling

Giro Helmet Sizing Chart

To determine the correct helmet size, wrap a measuring tape around the head keeping the tape just above the ears and level front ot back. Once you've determined the measurement you can use the chart here as a guide.

X-Small  18.5-20"
Small  20-21.75"
Medium  21.75-23.25"
Large  23.25-24.75"
X-Large  24-25.55"

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