Harnessing, his sense of insane speed, Dale Earnhardt Jr.'s signature pair of Spy sunglasses -- the Dirty Mo -- look like the G-force literally melted the ear pieces straight back, creating a very aggressive style with a simple and striking look. Spy's tech is, of course, apparent here in Dirty Mo Sunglasses, including 8mm stop hinges, 8X4 Base Toric ARC lenses, and 100% UV, B, and C protection.
