HEAD AND BRAIN PROTECTION FOR HIGH PERFORMANCE RIDING The MTB Endurance 4.0 helmet offers more than safety; Designed for the ambitious the distant trail chasers and those who view MTB as not just a sport but a lifestyle. Used during the infamous Cape Epic by Speedcompany racing this helmet was made for adventure and fast riding  Equipped with cutting-edge 360° Turbine Technology for premium head and brain protection as well as providing maximum airflow and breathability this is the perfect helmet for long group rides or solitary treks. Combining comfort style and performance the Leatt Endurance 4.0 helmet sets a new standard for your rides  Ride in confidence with the Leatt MTB Endurance 4.0 helmet PowerBridge in-molded force absorber Fidlock magnetic closure system Eyewear docking port with anti-slip function MaxiFlow air channels optimized for high speed 3-year Leatt Helmet Replacement Program. Click here to know more In-molded impact foam for great energy absorption Maximized ventilation with 21 vents Strap divider and fit system developed for custom fit ease and comfort Soft touch and moisture wicking chin straps Moisture wicking breathable anti-odor and washable inner liner Lightweight Polymer Compound shell in three sizes Certified and tested: EN1078 CPSC 1203 ASTM F1447 360° Turbine Technology Reduced peak brain acceleration by up to 30% at impact speeds associatedwith concussion Reduces peak brain rotational acceleration by up to 40% Weight: from 315 g Sizing #S 51-55cm – 20-21 58" #M 55-59cm – 21 58 - 23 14" #L 59-63cm – 23 14 - 24 34"