The Convoy helmet provides mountain bikers an exceptional custom fit and elevated protection wrapped in Smith';s signature style. By integrating Smith';s proven VaporFit fit system with a MIPS liner system - the Convoy delivers a tailor-made fit for every rider across four unique shell sizes. The AirEvac ventilation system and engirneered eyewear storage delivers the ultimate integration you expect from a Smith helmet.PRODUCT FEATURESLightweight in-mold constructionMIPS system available in all colorsVaporFit adjustable fit system21 optimized ventsPerformance comfort liningUltra-light single layer webbingAirEvac ventilationIntegrated visorUltimate eyewear integrationWeight (Size M, MIPS) 11.0 oz / 300 gramsCERTIFICATION: CPSC, CE EN 1078, AS/NZS2069Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older.