Take to the slopes with a high-performance helmet featuring a hybrid Aerocore™ 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. Vent placement maximizes airflow and heat exhaustion in warm temperatures while minimizing undesired cold air drafts MIPS-the shell and liner are separated by a low friction layer that allows the helmet to slide relative to the head in and angled impact AirEvac ventilation drives warm air away from your goggles and out of the helmet through internal channels and vents Compatible with Outdoor Tech™ Audio Systems (sold separately) Removable Snapfit SL2 ear pads Removable and machine-washable Silver Tech XT2 performance lining Polystyrene/polycarbonate/ABS plastic Imported