Plain, simple, and badass, the Dirk looks so tough it broke the mold. Available with the SPY detail- and mood-boosting Happy Lens and Trident polarization, the Dirk is built from virtually indestructible Grilamid and features snap pin hinges, 8-base polycarbonate ARC lenses and 100% UV protection. Available with the color and contrast enhancing Happy Lens and Trident polarization Built from virtually indestructible Grilamid 8-base polycarbonate ARC lenses for increased optical performance High-quality, long-lasting snap pin hinges 100% UV protection reduces eye fatigue and long-term sun damage Frame measures 64-16-125