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™. 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 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