Our site is optimized for today's modern browsers. To fully benefit from our site's features, please download the latest version of either:   Firefox, Chrome, Opera, Safari or Internet Explorer


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 Costas include a 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: 16.9mm
  • Temple Length: 118.1mm
  • Lens size A/B: 61.4mm/ 39.7mm
BLACKFIN is rated 4.5455 out of 5 by 11.
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 Great Glasses I have 2 pairs of this same model. I have had other models but these fit me perfectly. I will only buy the blackfin for now on. Costa is also very good at repairing the glasses. I have had them fix the lenses once already.
Date published: 2016-01-22
Rated 2 out of 5 by from Rubber came off My husband has had these for less than a year and the rubber came off. I wish there was a way to purchase these exact sunglasses in black that doesn't have the rubber piece. Hoping to send them in to be repaired.
Date published: 2016-01-07
Rated 3 out of 5 by from Rubber Delaminated Great optics but the rubber delaminated and the nose piece did as well. Overall I've had good success with Costa.
Date published: 2015-12-10
Rated 5 out of 5 by from Great quality glasses. Excellent lens clarity. Amazing glasses, comfortable, durable, amazing clarity. Highly recommend the BlackFins.
Date published: 2015-12-24
Rated 5 out of 5 by from Fantastic product I gave this pair or sunglasses to my son who is a fishing guide! He had been looking for a lense that would allow him to see underwater fish in very low light situations ie-very cloudy -fog-or very early in the morning or late after sunset! Your glasses turned out to do just the trick for him and he LOVES them!
Date published: 2016-01-07
Rated 5 out of 5 by from Bought 6 different pairs!! Bought each one of my children, my husband, and myself a pair.
Date published: 2016-01-06
Rated 5 out of 5 by from Love them. The strap was missing and cloth to clean them.
Date published: 2015-12-24
  • 2016-02-05T08:43CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_1, tr_10
  • loc_en_US, sid_blackfin, PRD, sort_relevancy
  • clientName_costadelmar
  • bvseo_sdk, p_sdk,
  • CLOUD, getContent, 121.91ms