The pinnacle helmet in Smith's performance road collection is the all new Trace. The Trace features Koroyd, which fully surrounds the helmet providing exceptional protection and works with the internal air channels and open intake and exhaust ports to produce maximum ventilation. Storage and ventilation of eyewear is crucial on those long rides, the Trace's AirEvac system relieves hot air that builds up on your eyewear to prevent fogging. Eyewear storage is made easy by channels on the side of the helmet that hold your eyewear in place for those grueling climbs.Lightweight Aerocore in-mold constructionComplete ventilated protection featuring KoroydIntegrated skeletal structureVaporFit adjustable fit system18 optimized ventsXT2 anti-bacterial performance liningUltra-light single layer webbingAirEvac ventilationUltimate eyewear integrationLight mount compatibleMIPS system available in all colorsWeight: (Size M, MIPS) 10 oz / 280 gramsCertification: CPSC Smith Trace Mips Bike Helmet Matte Gravy Size Small 51-55Cm