Smith Optics Pivot-Mips Adult Ski Snowmobile Helmet - Matte Charcoal / Medium Bombshell PLUS construction, Multi-Impact EPP liner and Airflow climate control 13 vents MIPS system available in select colors Self-adjusting lifestyle fit system and X-static performance lining with Available in Asian fit AirEvac 2 ventilation and Beanie compatible audio systems available Removable goggle lock