Fast-paced lunch ride or weekend 60-miler, the Smith Persist road helmet is down for whatever you've got in mind. Designed to feel like it's tailor-made for your head, you can fine tune the fit on the fly with an easy to use dial adjuster. When you're sweating it out on the climb, 21 fixed vents and our AirEvacventilation system keep the air flowing, your head cool and your glasses from fogging. Energy absorbing zonal Koroyd® complements MIPS® Brain Protection System to reduce impact forces in the event of a crash and for the confidence to tuck every descent.ProtectionLightweight in-mold construction, Zonal Koroyd® coverage for lightweight, energy-absorbing and ventilated impact protectionMIPS® Brain Protection System reduces rotational forces caused by angled impacts to the headCPSC and CE EN 1078 certifiedFit / IntegrationAdjustable dial fit system for a customized fitDesigned for ultimate integration with Smith performance eyewear for maximum comfort, venting and storage convenien