Design & Technology: Women's fit snow helmet In Form(TM) 2 Fit System is lighter and lower profile than the original to customize your fit Improved dial design provides up to 6cm of adjustment with enhanced stability MIPS(R) Spherical technology reduces rotational energy during certain impacts for an additional level of confidence Spherical technology also eliminates contact with hard plastic or slip-planes against the skin Seamlessly integrated VIVID shield aligns below the helmet brim, incorporating "Stack Vent" technology, which has been engineered to fit perfectly to your face to prevent wind and snow from entering the helmet VIVID shield easily pulls out over the helmet and back down VIVD shield sits securely on top of the helmet and provides a perfect fit on the face when in the down position Thermostat Control Adjustable Venting allows you to custom-tune airflow instantly with a simple, low profile control button on the outside of the helmet Features premium VIVID lenses with Optics by ZEISS(R) VIVID Lens Technology effectively manipulates blue light by letting in contrast enhancing blue light, while blocking harmful UV light Hybrid Construction merges a durable ventilated hard shell upper with an In-Mold Construction lower shell with sidewalls for added protection and style Hybrid Construction also features an impact-absorbing and lightweight EPS foam liner Certification: CE EN1077 Sizing: Small: 52-55.5cm Medium: 55.5-59cm Style: ARIASPHERICAL