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Product Information


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
BLACKFIN is rated 4.552941176470588 out of 5 by 85.
Rated 4 out of 5 by from Stupid rubber. Bought these Blackfins, they're great sunglasses. Sent them in for a lense repair, Costa was very timely about this. Got them back and wore them for a few months, rubber started coming off. What the heck is the point of putting rubber around the inside of sunglasses when it doesn't really hold them to your head? Not very happy with these because of the rubber mess on them.
Date published: 2016-03-24
Rated 5 out of 5 by from Best Frames I have five different pairs of blackfins. With the new injection molding these are by far my favorite glasses. I also have a pair of cuts, wingmans, corbinas, tuna alleys, double haul, isabellas, south point, cudjoes and a few others. Just wish costa would bring back the gunmetal frame for the blackfins. I'm a walking promotion and will never purchase another brand of sunglasses. Thanks Costa Crew!
Date published: 2015-11-24
Rated 5 out of 5 by from Best sunglasses I've ever owned! I had another pair of Costa del Mar glasses that needed a repair. I sent them in and was told they couldn't be fixed but I could choose another pair! I have extremely sensitive eyes and was guided by a very knowledgeable associate- ended up buying "men's" glasses for the greatest coverage. Costa del Mar is fantastic- where can you find such an incredible warranty AND such helpful customer service these days? Unfortunately, my Blackfins were stolen from my hotel room in New Orleans on Christmas Day. I'm back wearing cheap glasses until I can ask for a new pair for my July birthday.
Date published: 2016-05-31
Rated 5 out of 5 by from Must have for the flats fisherman I have owned a few different models but my favorite are by far the Blackfins. I use the copper colored lenses on the flats and they absolutely give me an advantage in being able to spot fish for my clients. Here in Hawaii we have absolute giant Bonefish but our water is slightly deeper than you might find in say the Bahamas so glasses that cut the glare are a must. The 580 lenses are so clear and the copper tint brings out every detail on the flat. Its so common to have clients with other "high end" polarized glasses that are unable to see the fish just infant of them when my Blackens let me spot them 100yds away.
Date published: 2016-05-25
Rated 4 out of 5 by from New favorite glasses I have owned these glasses a month now and found them to be very helpful to me when on the water. Blue tinted lenses are an improvement over my amber lenses when on the water. I have a large face and the Blackfin model fits very well. I like having my eye totally enclosed by lens when on the water as wind pressure can really bother my eyes after a long day on the water. Tortoise color of the frames is darker than what appears online, but I like the darker colored tortoise color. I will probably look at Costa eyeglasses with an amber lens for driving. Great style and square lenses work well on my oval face.
Date published: 2016-09-14
Rated 5 out of 5 by from Great Shades! Bought Blackfins on recommendation of friend, fantastic SHADES for anything outdoors!
Date published: 2016-09-15
Rated 5 out of 5 by from New to Costa I've always been an Oakley guy.....dating back to probably junior high baseball or something. A friend of mine turned me on to these. He promised me it would be a "life changing experience". Honestly I just liked the design....that's what got our conversation started in the first place. So I placed an order. I got the 580G lenses (bronze) and WOW. The clarity is ridiculous. I can see clearer with my costas on than without them. The bronze tint doesn't "darken" everything when you put them on. They simply remove the harmful rays that hurt your eyes (or cause you to squint). They are perfect for everyday driving or anything but athletics really. The 580G lenses do have a little weight to them....but for an athlete, you're gonna need a darker lense.
Date published: 2016-05-01
Rated 3 out of 5 by from Love my costa's I have had mine for 2 years ware them every day would never buy another brand. The only complaint is have is the rubber is coming off around the bottom of my glasses. Other than that love them..
Date published: 2016-08-08
  • 2016-10-26T07:41CST
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