Swank is retro-value for modern times, carrying the freedom of youth into the excitement and unpredictability of tomorrow. Made of Grilamid TR-90, the frames are highly flexible and can be bent without going out of shape or breaking. The frames allow the temples to shape the head and face to provide a comfortable fit. TifosiÂs lenses feature a hydrophobic coating that repels water and sweat to help prevent moisture from gathering on the lens, increasing visibility and preventing distortion. Complies with Prop 65.