The Bowie comes with the SPY Happy Lens, the only color and contrast enhancing lens technology that maximizes the transmission of the sun's "good" rays--while still blocking out its "bad" rays--which studies suggest fosters an uplift in mood and alertness. Constructed from high-quality propionate 6-base polycarbonate ARC® lenses. 100% UV protection. Features sturdy 5-barrel hinges. Frame measures:: 56-17-145.