BELL MX-9 MIPS Solid Adult MX HelmetBell covered all the details on the MX 9, loading it with a tough polycarbonate shell, Mips energy management system, an adjustable visor, Velocity Flow ventilation, and a removable, washable, anti microbial liner for when the time comes to hose down. The MX 9 Mips packs all these features into one helmet, delivering exceptional value and pro caliber performance. FEATURES: Lightweight Polycarbonate ABS Shell Mips Energy Management System Velocity Flow