The Discord 50/50 sunglasses are half-rimmed models designed by the Spy brand. They benefit from lightweight Grilamid frames and scratch-resistant polycarbonate lenses. The lenses areCategory 3 to ensure optimum vision during your outdoor activities in fine weather. They also incorporate ARC technology, for reduced optical distortion, and Happy, forimproved color as well as contrast. In addition, these lenses feature Spectra coating to limit glare and keep vision sharp.