The Specialized Chamonix Mips Helmet. Premium features, certified protection, and sleek styling make the Chamonix a tremendous value for any cyclist.Specialized Chamonix Mips Helmet FeaturesOne-size system, designed for an easy and accurate fit to a wide range of head sizes.Headset SX fit system with micro-adjustable dial for easy, secure, and accurate fit.4th Dimension Cooling System optimizes ventilation.In-moulded shell improves strength and reduces weight.Tri-Fix web splitter for improved comfort and ease of strap adjustments.Reflective webbing and decals for increased visibility to motorists in low-light conditions.Patented clip-on visor included.MIPS-equipped.Fit system is ANGi crash sensor ready. More info