DETAILS Combining a bold front with sleek temples in a mid-sized frame, the Montana brings big performance to the biggest skies. Features include the detail- and mood-boosting Happy Lens, a virtually indestructible Grilamid construction, high-quality pin hinges, and 6-base polycarbonate ARC lenses providing 100% UV protection. Happy Lens enhances color and contrast, increases clarity, and improves mood and alertness Available with Trident polarization that eliminates reflective light Constructed from virtually indestructible Grilamid 6-base polycarbonate ARC lenses High-quality pin hinges 100% UV protection reduces eye fatigue and long-term sun damage Frames measures a medium 54-16-140