Leatt Helmet MTB All Mtn 2. 0Trail-Ready Features The Leatt All Mtn 2. 0 helmet combines trail-ready features with proven protection for riders who are always looking forward to their next adventure. With Leatt's 360deg Turbine Technology, it helps reduce rotational forces and absorb low-speed impact energy, while in-molded impact foam provides high-speed impact protection, working together as a 3-in-1 safety system. The lightweight polymer shell features 20 vents for consistent airflow, and a breathable, moisture-wicking liner keeps you dry through the climbs and descents. A Fidlock magnetic buckle makes it easy to secure the helmet with one hand, and the adjustable breakaway visor adds an extra layer of safety in a crash. With trusted Leatt protection and comfort, the All Mtn 2. 0 is ready for your next big day on the trails. Features When combined with the impact foam, 360deg Turbine Technology offers a unique 3-in-1 safety system by protecting against low-speed impacts, high-speed impacts, and rotational forces In-molded impact foam for superior energy absorption20 vents effective even at low speeds SPECIFICATIONSCore Material Impact Foam Closure system Leatt Fit System Safety Certifications AS/NZS 2063:2008, EN1078, CPSC 1203Intended Use Mountain Weight375g Sizing Size Small Medium Large Head Circumference (cm)51 - 55cm55 - 59cm59 - 63cm Head Circumference (in)20" - 21-5/8"21-5/8" - 23-1/4"23-1/4" - 24-3/4" | Leatt | Helmet Mtb Allmtn 2. 0 Men's | Size Large In White