Smith Optics Persist MIPS Road Cycling Helmet - Black/Cement Medium

[PROTECTION: Lightweight in-mold construction MIPS Brain Protection System reduces rotational forces caused by angled impacts to the head. FIT / INTEGRATION: VaporFit dial adjustment system offers 270-degree fit adjustment with the turn of a dial Designed for ultimate integration with Smith performance eyewear for maximum comfort venting and storage convenience AirEvac ventilation system integrates with Smith goggles and eyewear for fog-free lenses. FEATURES: 21 fixed vents for consistent airflow Performance comfort lining Lightweight low-bulk single layer webbing WEIGHT: (Size M MIPS) 11oz / 300g CERTIFICATION: CPSC CE EN 1078]