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: 375g (0.83 lbs) Sizing: S (51-55cm – 20-21 58''), M (55-59cm – 21 58- 23 14''), L (59-63cm – 23 14 - 24 34'') 
