Mips Evolve Solution is a low-friction layer that allows a sliding motion of 10 to 15mm in all directions. Studies indicate that this reduces some of the rotational forces transmitted to the brain during angled impacts. Propero 4 earned the highest 5-Star Virginia Tech® Helmet Rating from internationally renowned Virginia Polytechnic Institute and State University. FS3 Fit System & Occipital Base Adjustment optimizes comfort by personalizing fit to individual head shape, and helmet angle can be adjusted for compatibility with glasses. Adjustable Tri-Fix web splitter combined with thin 10mm webbing for increased comfort. Dedicated sunglass storage maintains a secure fit and keeps eyewear out of the way when needed. Micro Channeling & large rear-end vents for increased ventilation. S-Works Evade 3 front-end design language for enhanced Aerodynamics. Precision, full-wrap polycarbonate shell for increased durability and premium finish.
