KABUTO TR Bicycle Helmet with Magnetic Matte JCF Approved AERO-R2 Buckle, White, Size S/M (Head Circumference 55cm-58cm),

The AERO-R2 features a magnetic buckle for secure fastening and removal. This model is specifically designed for triathlon. Size indication (reference weight): S/M (N.A.) Head circumference guideline: 55-58cm Aerodynamic performance thoroughly pursued and proven through CFD analysis and wind tunnel testing. The "Air Tunnel Structure (PAT.P)" improves aerodynamic performance through airflow rectification. Features the "KBF-2" adjuster using the Boa Fit System. A new headrest mechanism allows for two-stage adjustment on both sides. Includes the patented aerodynamic device "Wake Stabilizer (PAT.)". Equipped with a shield designed to avoid interference with eyeglasses. Features COOLMAX technology to maximize cooling. Includes Ultra Sweat Pad-03. Includes eyewear hold function and non-slip rubber-02. Chin strap made of MOFF odor-eliminating fiber with added water-repellent properties.