Premium features, certified protection, and sleek styling make the Chamonix a tremendous value for any cyclist.Key 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..