The all-new Mirage combines single-zone adjustable venting with lightweight in-mold construction for a helmet experience that is reduced down to just what you need for a day on the hill. The dial-fit system and cozy liner ensure that you are comfortable and warm. The Mirage exemplifies Smith's belief that every detail should be considered.. . Lightweight in-mold construction. Aerocore construction featuring Koroyd. Regulator adjustable climate control. 14 vents. Adjustable dial fit system. Snapfit SL2 earpads. AirEvac2 ventilation. Weight: 16 oz. (450 grams). Certification: ASTM F 2040, CE EN 1077:2007 CLASS B. Outdoor Tech