KABUTO Bicycle Matte Sizes JCF Certified AERO-R2 Helmet, White, S/M (Head Circumference 55cm-58cm),

Dominate the wind. An aero road bike that inherits the genes of the track aero helmet that has attracted worldwide attention. Size (reference weight): S/M (N.A.) Head circumference: 55-58cm Aerodynamic performance thoroughly pursued and proven through CFD analysis and wind tunnel testing. "Air Tunnel Structure (PAT.P)" improves aerodynamic performance by streamlining the air. Employs the "KBF-2" adjuster with the Boa fit system. New headrest mechanism allows for two-stage adjustment on both sides. Patented aerodynamic device "Wake Stabilizer (PAT.)" Equipped with a shield that takes into consideration interference with glasses. COOLMAX is used to maximize the air cooling effect. Ultra Sweat Pad-03 included. Eyewear hold function and non-slip rubber-02 included. Chin strap made of deodorizing fiber MOFF with added water repellency.