The off-road world is a dirty, tough place. Chunks of rock and dirt mean business when launched by roosting tires, and even when it's muddy, hitting the ground is always hard. That's why we sweated 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. Specs: MIPS: MIPS energy management system CONSTRUCTION: Integrated roost guard SHELL TYPE: Lightweight polycarbonate/ABS shell construction SPORT: Powersports VISOR: Fully adjustable flying bridge visor with air intake vents INTERIOR/LINER TYPE: Removable/washable anti-bacterial interior VENTILATION TYPE: Velocity flow ventilation system for maximum cooling 7131640 MD 7131641 LG 7131642 XL 7131643 XXL