• ChromaPop™ lenses enhance contrast and natural color to make the details pop
  
• 100% UV protection
  
• Medium fit, medium coverage
  
• 4-base lens curvature is just right for everyday wear
  
• Megol nose pads provide nonslip grip so glasses stay put
  
• Evolve™ bio-based frame material is lightweight and durable
  
• Smith branded metal hinges
  
• Lightweight, stainless steel temples
  

From Smith:

The cool cousin of our Lowdown 2. The Lowdown Steel sunglasses have the classic looks that run through the family, but with a metal edge. The lightweight frames have soft rubber nose pads, so they don't slide down when you break a sweat. Smith ChromaPop™ lenses dial up the detail and color, so you see as sharp as you look.