Take to the slopes with a high-performance helmet featuring a hybrid AerocoreTM shell and VaporFit adjustable fit system that provides a secure, custom fit. Twenty vents and AirEvac ventilation regulate your temperature with ease, so you can keep skiing or boarding all day long. This version features Multi Directional Impact Protection System, or MIPS, which uses slip-plane technology inside the helmet to reduce rotational forces that can occur in certain impact situations. An antibacterial XT2® performance liner ensures that you are comfortable and warm. Complies with ASTM F 2040 and/or CE EN 1077 alpine ski and snowboard helmet safety standards Aerocore design using Koroyd® material increases airflow, improves temperature regulation and antifog capability, and enhances impact resistance Airflow climate control ventilation utilizes strategically placed vents for easy climate control in all conditions.