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 alertnessAvailable with Trident™ polarization that eliminates reflective lightConstructed from virtually indestructible Grilamid®6-base polycarbonate ARC® lensesHigh-quality pin hinges100% UV protection reduces eye fatigue and long-term sun damageFrames measures a medium 54-16-140