Smith Women's Vantage w/MIPS: Snow Helmet Hybrid SL Shell Construction + Aerocore Technology featuring Koroyd AirEvac 2 Ventilation - Moving air through external vents and internal channels Low-Profile Dual Regulator Adjustable Climate Control (21 Vents) - Adjustable ventilation helps regu Adjustable Boa FS360 Fit System Claimed weight: 17.5oz