The Lazer Genesis Helmet features the patented Rollsys retention system and internal ventilation channels for maximum airflow.Patented Rollsys retention system is easily adjustable and very comfortableIn-Mold 6 piece construction; 19 large ventsIncludes helmet bagNOTE: There was a sizing change on this model between 2011 and 2012: A 2011 XS/MD is a 2012 MD. A 2011 LG/XL is a 2012 LG. The actual fit dimensions did not change at all; available in two sizes onlyRigidity Brace System (RBS) for multi-impact protectionLazer has a simple crash replacement program for dealers; contact BCM Customer Service at 1-800-346-0004 for detailsItem SpecificationsColorBlue/WhiteWeight338gFits59-61cmGenderMen"sSizeLargeHelmet StyleRoad PerformanceDefined ColorBlueVisor IncludedNo