Giro Women's Snow Helmets MIPS (Multi-Directional Impact Protection System) Spherical Women Specific Design In Form 2 Fit System Thermostat Control Stack Venting Plush Max Padding Fidlock Magnetic Chinstrap Compatible with ODT Audio Kits Seamless Compatibility with all Giro Goggles The Envi MIPS features the new MIPS (Multi-Directional Impact Protection System) Spherical technology that keeps the helmet incredibly lightweight on your head, while improving protection. The MIPS Spherical increases the rotational ability of the inner shell of the helmet should you take a rotational impact rather than transfer that energy back to your brain. Plush Max Padding feels soft on your head, and adds extra warmth. Giro's Thermostat Control Adjustable Venting gives you the ability to regulate the airflow into the helmet to prevent overheating on a hike or skin. Stack Vents keep air flowing across the top foam of your goggles to keep your lenses fog-free at all times. The In Form 2 Fit System has an easy to adjust dial that gets the fit perfectly around your head.. Giro Women's Envi MIPS Helmet