Styled for maximum airflow and go-fast good looks, the lightweight, 21-vent Circuit was designed using Computational Fluid Dynamics, for an air-gobbling shape that delivers superb ventilation and unbeatable air flow.
Lightweight road helmet for superior performance
21 CFD software enhanced vents for maximum airflow and efficiency
Premium, wicking fit pads
One-hand adjustable ZipTite fit system
Three sizes ensure the best fit
In-molded strap retention system with Lockdown strap adjusters
Features
Please note: Unless otherwise stated, all bicycle helmets sold on SigmaSports.com are certified with a European CE EN1078 standard. Specific countries may have their own certification, which is legally required. Please check your specific country requirements.
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