A fresh path from the trailblazers of style, this design inspired by influential athletes is shaped with a classic keyhole bridge and the curves of rounded lens orbitals, and we engineered it with the convenience of an interior kick-up feature that lets you clip it to your shirt./p> Fit & Design: Lightweight O Matter(TM) frame material with Square O metal icon accents Clip hinge mechanism that enables the eyewear to latch onto your t-shirt to secure eyewear 4 base lens geometry with HDO(TM) Prizm(TM) lenses enhance color, contrast and detail for an optimized experience California Proposition 65