A proven favorite for more than a decade, the updated Nine is now offered with the Multi-directional Impact Protection System (MIPS). This lightweight helmet features a low profile, streamlined silhouette and a wealth of features including the In Form Fit System, Vertical Tuning and Thermostat Control venting. . . . MIPS- Multi-directional Impact Protection System. . In-Mold Construction. . In Form Fit System. . Vertical Tuning. . Thermostat Control adjustable vending. . Super Cool Vents. . Stack Ventilation. . Audio system compatible. . S: 52-55.5cm. . M: 55.5-59cm. . L: 59-62.5cm. . CE EN1077 compliance. . 768686703331 30578800041 7051993