AGV K1 S Sling HelmetThe AGV K1 S Helmet has an aerodynamic shape, ventilation scheme and spoiler developed for the wind tunnel tested Corsa R and Pista GP R. The shell and spoiler provide aerodynamic stability at speed, and the spoiler itself features a passive rear vent to extract warm air from the helmet as you ride. The K1 also incorporates the central air intake above the visor taken directly from MotoGP developed Pista GP R to provide best-in-class ventilation.Shell: HIR-TH (High Resistance Thermoplastic Resin) shell construction 2 shell sizes, 4 EPS sizes Shield: 190 degree horizontal field of view XQRS (X-tra Quick Release System) visor mechanism for tool-free removal and replacement of the face shield in seconds Scratch-resistant and anti-fog polycarbonateface shield Pinlock A Pinlock lens is made to enjoy a fog-free ride. It is based on two key principles to ensure a fog-free vision. The moisture absorbing surface of the lens effectively attracts and stores water molecules, while the airtight seal creates a thermal barrier together preventing condensation of the visor. The system is kept in place by positioning the lens between two adjustable pins, making Pinlock the number one anti-fog solution for helmets. 70 MaxVision prepared (lens sold separately) 100% UV protection 2 shield sizesGT 4-1 for helmet sizes XS, SM and MD and GT 4-2 for sizes LG, XL and 2XL Micro-opening visor Ventilation: Integrated Ventilation System (IVS) was designed and optimized in a wind tunnel 5 front vents (3 at the forehead and 2 on the chin guard) 2 rear extractors vents built into spoiler Interior: Fully removable and washable 3D inner liner andcheek pads Liner and cheek pads are sanitized and made from Dry-Lex fabrics Fit especially designed to allow wearing glasses Ready for generic communication system Removable nose guard and wind protector Safety: DOT approved ECE 22.06 ECE 22.06 is a helmet safety rating that extends and increases the testing requirements of ECE 22.05 (with 22.05 being a more modern, more comprehensive European alternative to DOT). With 22.06, 12 additional impact points are analyzed (now totaling 18) and impact speed is increased (from 7.5 to 8.2 m/s). Unlike DOT, every ECE helmet model must actually be tested by an independent lab before it receives 22.06 certification. certified Helmet profile contoured around the base to reduce the risk of collar bone injuries Double-D ring The Double-D ring closure is THE tried-and-true motorcycle helmet retention system. Consisting of two "D" shaped rings, the rider laces the opposing strap through the closure to secure the helmet. It is strong, simple, reliable and infinitely adjustable. Some helmets use alternative closure methods, but the Double D-ring The Double D-ring closure is THE tried-and-true motorcycle helmet retention system. Consisting of two "D" shaped rings, the rider laces the opposing strap through the closure to secure the helmet. It is strong, simple, reliable and infinitely adjustable. Some helmets use alternative closure methods, but the Double D-ring remains the gold standard for these reasons. remains the gold standard for these reasons.. chin strap