Hit the slopes with confidence in this sturdy snow helmet loaded with features that enhance comfort, safety and durability. Zonal Koroyd™ and MIPS® provide energy-absorbing impact protection, while the shell features 21 vents to fine-tune airflow. The BOA® 360 Fit System provides a perfect fit with the turn of a dial, while tried and true AirEvac™ technology provides a fog-free goggle interface. Complies with ASTM F 2040 and/or CE EN 1077 alpine ski and snowboard helmet safety standards Zonal Koroyd coverage provides lightweight, energy-absorbing impact protection MIPS Brain Protection System reduces rotational forces caused by angled impacts to the head AirEvac ventilation system integrates with Smith goggles (sold separately) for fog-free lenses BOA 360 Fit System provides on-the-go micro-adjustability with the turn of a dial Dual regulator climate control for one-handed front and rear vent adjustment 21 vents Removable Snapfit SL2 ear pads add warmth; audio-chip compatible XT2® antimicrobial lining for sweat-activated odor control Aleck™ audo systems compatible Polystyrene/polycarbonate/ABS Imported