12 Extra Large Vents Strategically Placed For Maximum Airflow And Cooling; Patented Coolcore Headliner Moves Moisture And Sweat Away From Your Body While Dissipating Heat; Headliner Is Treated With FUZE Technology For Permanent, Chemical Free, Anti Odor Performance In Even The Hottest Riding Conditions; Frontal Reinforcement Cage For Extra Impact Resistance Without Impeding Ventilation; Micro-Adjustable DialFit System For Precise Fit; Mips Technology Is Based On Decades Of Research Studying Brain Injuries And Helmet Construction; ASTM/SEI Certified; Size: Medium (7 – 7 3/8); Color: Black Duratec; Style #54035-50-700