K1 S Sling Helmet Double D retention system Shell 4-density EPS High Resistance Thermoplastic Collarbone safe profile Ventilation Two rear extractors and five front vents Adjustable air vents Aerodynamics Integrated spoiler Interior Dry-Comfort fabric Fit especially designed to allow wearing glasses Ready for generic communication system Removable and washable interiors Removable nose guard and wind protector Visor 190° horizontal field of view Micro-opening system Extra Quick Release System (XQRS) Anti-scratch Multistep visor mechanism Pinlock 70 MaxVision prepared (not included)