Aggressive race styling with light reactive lensesyou should really have a pair of glasses with you on every ride to offer protection from the sun wind and debris the endura mullet glasses deliver all the protection you need in a lightweight high performance packagethe photochromic lenses react to different light levels and adjust to give you the correct level of tinting in changing conditions and the semi mirror finish cuts out glare and increases clarity the lenses are also vented to hel