When designing the Smith Convoy MTB helmet, we set out to create a mountain bike helmet that felt like it was tailor-made for your head. Turn the dial in back, and the VaporFitsystem adjusts like a halo around the skull. When it comes to comfort and protection, the helmet ticks all the boxes. It has a MIPS® liner system and all the ventilation you'll need through the hottest days on the trail. In addition to easy integration with performance eyewear, it also features outside channels that store your shades when dusk sets in.Key Features:2 fixed vents for consistent airflowIntegrated visorPerformance comfort liningLightweight, low-bulk single-layer webbingWeight (Size M, MIPS®): 11 oz / 3 gSizes: S - 51-55cm, M - 55-59cm, L - 59-62cm, XL - 61-65cmProtectionLightweight in-mold constructionMIPS® Brain Protection System reduces rotational forces caused by angled impacts to the headCPSC and CE EN 178 certifiedAS/NZS263 certifiedFit / IntegrationDesigned for ultimate integration with Smith