The Smith Survey ski and snowboard helmet combines MIPS(TM) and zonal KoroydA(R) safety innovations with a lightweight design for all-mountain use. An integrated visor simplifies goggle wear and offers the terrain-defining clarity of ChromaPop(TM). The helmet is lined for comfort with adjustable vents to regulate airflow. An adjustable dial fine-tunes fit, and the visor is over the glasses compatible. Lightweight in-mold construction fuses the exterior shell and EPS foam for a one-piece design that&';s lightweight and durable Zonal KoroydA(R) coverage for lightweight, energy-absorbing and ventilated impact protection MIPSA(R) Brain Protection System reduces rotational forces caused by angled impacts to the head Certification: ASTM F 2040, CE EN 1077:2007 CLASS B, CPSC, CE EN1078 Adjustable dial fit for easy, on-the-go size adjustment Regulator climate control also allows easy, one-handed vent adjustment Integrated ChromaPop(TM) visor for a wide field of view with contrast, color, and terrain-enhancing clarity Designed to fit over your glasses (OTG) ntegrated light sensitive 14 vents Removable Snapfit SL2 ear pads add warmth and are audio-chip compatible Aleck(TM) audio system compatibl