Specialized Chamonix Mips Helmet Satin Clay/Black Reflective Med/LgPremium features, certified protection, and sleek styling make the Chamonix II a tremendous value for any cyclist. Youll also find that its equipped with next level protection courtesy of revolutionary MIPS technology (Multi Directional Impact Protection System). Complies with U. S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. 4th Dimension Cooling System optimizes ventilation. Fit system is ANGi crash sensor ready. Headset SX