* 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'')