Shell: ABS shell super-strong construction; security: EPS shock absorber foam Certification: security tested [EN1077 B]; ventilation: passive front and top Venting to increase air flow Internal/lining: Full textile lining for comfort and warmth; ear pads: removable ear pads Weight: 495 g/ 1.09 lb; fit system Roxy ALLEY OOP - SNOWBOARD/SKI HELMET WHITE