Specialized S-Works Evade 3 CPSC Helmet Aero without compromise The newly redesigned S-Works Evade 3 Helmet from Specialized takes what was already one of the fastest helmets in the pro peloton and increases airflow by up to 10%, all while maintaining legendary aerodynamics. Specialized took to their "Win Tunnel" yet again when designing the Evade 3. They optimized aerodynamics by adding a rear diffuser for reduced drag, with larger vents for improved airflow without any decrease in performance. The dual-density EPS foam is wrapped in a durable polycarbonate shell, while the most ventilation-oriented Mips(R) protection yet, Mips(R) Air Node, is a low friction layer to reduce rotational forces caused by certain types of impacts. When performance, airflow and protection are critical, the S-Works Evade 3 is up to the task. Features Improved airflow by 10% from previous Evade models, with the same aerodynamic efficiency Mips(R) Air Node technology is a low friction layer to reduce rotational forces in a crash, while providing excellent airflow Rear diffuser for optimized aerodynamics Occipital Base Adjustment for optimization for every head shape and to better accommodate eyewear Tri-Fix webbing with thinner straps for reduced wind noise and lighter weight Mindset Fit System is an ultralight dial system that is ANGi sensor ready (sold separately)Dual-density EPS foam with a full-wrap polycarbonate shell for lightweight, durable protection SPECIFICATIONSClosure system Buckle Safety Certifications CPSCIntended Use Road, Road Race Weight N/ASizing Size Small Medium Large Head Circumference (in)20 - 22"21 3/4 - 23 1/4"23 1/4" - 24 3/4"Head Circumference (cm)51 - 56cm55 - 59cm59 - 63cm | Specialized | S-Works Evade 3 Cpsc Helmet Men's | Size Small In Black