Lightweight polymer compound shell in three sizes. MaxiFlow impact foam air channels are effective even at low speeds. 360° turbine technology reduces peak brain acceleration by up to 30% at impact speeds associated with concussion and reduces maximum rotational acceleration of the brain by up to 40%. In-moulded impact foam provides excellent energy absorption. Maximum ventilation is achieved with 20 vents. The visor features a tear-off function to reduce rotational impact forces. Dri-Lex® moisture-wicking, breathable, odour-resistant, and washable lining. Certified and tested: AS/NZS 2063:2008, EN1078, CPSC 1203. Weight: from 300 g (0.65 lbs). Size: S (51-55 cm), M (55-59 cm), L (59-63 cm).