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Costa Del Mar

Costa Del Mar Blackfin Tortoise with Silver Mirror Lens 580 Glass or Plastic


$ 169.00 $ 499.95

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  • Frame Color: Tortoise
  • Lens Color: Silver Mirror
  • Model: Blackfin

100% Authentic Brand New Costa Del Mar Fantail 
Box, Case, and Costa Del Mar Factory Limited Lifetime Warranty

You might have gallons of brine in your face and 600 pounds on your hook, but these sunglasses still won't slip. The Hydrolite™ co-injected lining takes care of that, and the flexible frame means serious comfort. Blackfin pushes the edge in sunglass performance--so you can push it everywhere else.


  • Comfortable large fit.
  • Integral hinge.
  • Heavy-duty TR 90 nylon frame.
  • Includes hard case.
  • 100% UV light blockage for max protection.
  • 100% polarization kills reflected glare and reduces eye strain.
  • Built by hand and backed for life. Every pair of Costa Sunglasses includes a limited lifetime warranty.
  • Plastic lenses are lightweight, impact- and scratch-resistant.
  • Glass lenses have the greatest clarity and are scratch resistant.
  • This style is prescription ready, click here to learn more about Costa prescriptions.


  • Base curve of 8.
  • DBL: 17.6mm
  • Temple Length: 114.8mm
  • Lens size A/B: 61.5mm/ 40.5mm


      From day one, our lenses have set us apart. All Costa lenses have 100% UV blockage for maximum protection and 100% polarization to kill reflected glare. Our 580 technology goes beyond polarization to produce the clearest lenses on the planet. It selectively filters out the harsh yellow and harmful high-energy ultraviolet blue light, making colors brighter and objects appear more defined. So no matter what you are doing under the sun, you’ll see it in stunning detail.

      Glass lenses are best for situations that require ultimate clarity, and our plastic lenses are more cost effective while being more durable for more demanding applications without sacrificing clarity.

      Glass Plastic
      Technology Our most high-tech lenses C-WALL coating repels oils, water and dust
      Clarity Highest clarity High clarity
      Toughness Scratch resistance Impact resistance
      Weight Lighter than average polarized glass Lighter than glass for added comfort
      Protection 100% UV blockage for maximum protection
      Polarization 100% Polarization kills reflected glare


      Frame Width Visual Representation 

      One size doesn’t always fit all. That’s why we have over 60 different frame styles. These icons indicate if a frame style is small, medium, large or extra large. Large frames are our most common.

      580 TECHNOLOGY


      Benefits of our most high-tech lenses:

      • Superior clarity
      • 20% thinner and 22% lighter than average polarized glass
      • Encapsulated mirrors
      • 100% polarized to kill glare and reduce eye strain
      • 100% UV protected for maximum protection
      • U.S. Patent No. 6,334,680
      • U.S. Patent No. 6,604,824

      Benefits of 580 plastic lenses with C-WALL®:

      • 580 clarity
      • Lightweight and durable
      • Impact- and scratch-resistant
      • Outperform every other lens in the class
      • Available in mirrors
      • 100% polarized
      • 100% UV protected
      • U.S. Patent No. 7,506,977

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