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AirEvac™ ventilation system integrates with Smith helmets for fog-free lenses
Fixed vents for consistent airflow
Replacement lens for the Smith Optics 4D MAG S goggle
Evolve bio-based frame material is lightweight and durable
Standard zip case
Altus MIPS | Matte Chalk Size:Medium (55-59cm) AirEvac™ ventilation system integrates withProtection Lightweight in mold construction fuses the exterior shell and EPS foam for a one piece design that's lightweight and durable Zonal Koroyd coverage for lightweight, energy absorbing and ventilated impact protection MIPS Brain Protection System reduces rotational forces caused by angled impacts to the head Select colorways offered without MIPS system Certification: ASTM F 2040, CE EN 1077: 2007 CLASS B Fit Integration Designed for ultimate
