The thing about classics is they slip across decades. The Lowdown 2 sunglasses could be from this season, next season, or 1962. The bio-based frames have soft rubber nose pads, so they don't slide down your face when you break a sweat. They come with your choice of crystal-clear Carbonic lenses or Smith's color-boosting ChromaPop. Product Specs Vision ChromaPop™ lenses enhance contrast and natural color to make the details pop. Carbonic lenses offer impact resistance and clear optics. Smudge and moisture-resistant coating for easy cleaning and clear optics (ChromaPop™ option only). Anti-reflective coating improves clarity and reduces eye strain (ChromaPop™ option only). 100% UV protection. Includes microfiber bag. Fit / Integration Medium fit, large coverage. 4-base lens curvature is just right for everyday wear. Megol nose pads provide non-slip grip so glasses stay put. Frame Evolve™ bio-based frame material is lightweight and durable. AutoLock hinges hold frames open for easy one-hand on and off.