Smith Optics Axle Adult Off-Road Cycling Helmet - Matte Black Bombshell PLUS Construction and Multi-Impact EPP Liner X-Static Performance Lining and Self-Adjusting Lifestyle Fit System 13 Vents and AirEvac 2 Ventilation Airflow Climate Control, Ultra-Light Single Layer Webbing Certification: CPSC, CE EC 1078 and Weight: 17 oz/480 Grams