PowerBridge in-molded force absorber. Introducing the Leatt MTB All-MTN 3.0 helmet made for next-gen mountain adventurers who breathe alpine air and crave thrilling descents. With fresh colours and a clean innovative design this is more than just a helmet – it's a sign of the adventurous mountain spirit Incorporating a unique PowerBridge structure to disperse impact forces as well as Leatt’s groundbreaking 360° Turbine Technology the MTB All-MTN 3.0 helmet promises unmatched safety on challenging terrains. From the sunglasses dock port to its superior ventilation every feature is crafted for comfort and protection. Embrace the mountain's call and be prepared for every ride with the MTB All-MTN 3.0 Helmet Lightweight polymer shell in three sizes Sunglasses dock port for easy secure storage Fidlock magnetic closure system 360° Turbine Technology Reduced peak brain acceleration by up to 30% at impact speeds associated with concussion Reduces peak brain rotational acceleration by up to 40% Adjustable visor with breakaway function for rotational impact force reduction In-molded impact foam for superior energy absorption Maximized ventilation with 20 vents effective even at low speeds  Moisture wicking breathable anti-odor and washable inner liner Certified and tested: AS/NZS 2063:2008 EN1078 CPSC 1203 Weight: from 350g 0.78 lbs  Sizing#S 51-55cm – 20-21 58" #M 55-59cm – 21 58- 23 14" #L 59-63cm – 23 14 - 24 34"