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 Features One-size system, designed for 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.