The Register helmet combines sleek design and lightweight construction with features that complement your style on the road or trail. Made with In-Mold Construction technology in a comfortable Universal Fit size, and equipped with our convenient Roc Loc Sport system, the Register adjusts with a simple turn of the dial so you can customize the fit in seconds. All-purpose bike helmet In-Mold polycarbonate shell with EPS liner Removable Quck Link visor Full Hardbody shell Roc Loc Sport fit system 22 vents Quick-dry padding Compact shape Reflectivity CONSTRUCTION - In-Mold polycarbonate shell with EPS liner FIT SYSTEM - Roc Loc Sport