Skip to main content
169,00 €
View full details
Premium Polarized 580 Lenses*

Filtering reflective glare is essential for anyone on the water or outdoors. We sell only polarized sunglasses.

100% UV Protection

Your Costas absorb 100% of UV light, providing you the best in light management and protection.


Scratch Resistant and Durable

The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning.

Introducing Tailfin - a modernized classic Costa design built for all waterman who require a clear view of their surroundings. Our Bio-Resin frame boasts refined and chiseled edges, complemented by features that help you stay comfortable and sweat-free, with your destination clearly in-sight. Offering two size options, both those with bigger and smaller heads can embark on their watery adventures fully equipped. No matter where you’re going, we built the Tailfin to help you get there — and maximize every moment spent on the water.

Model name: Tailfin
Item no: 6S9113 911308 57-17
Frame color: Matte Black
Lens color: Blue Mirror
Lens material: Polarized Polycarbonate (580P)
Frame fit: Regular
Size: S
Lens curve: Base 8 Decentered
Size Fit Guide 1 Size Fit Guide 2
S M
1. Frame Width:
126 mm
1. Frame Width:
132 mm
2. Bridge Width:
17 mm
2. Bridge Width:
17 mm
3. Lens Width:
57 mm
3. Lens Width:
60 mm
4. Lens Height:
39.1 mm
4. Lens Height:
41.4 mm
5. Temple Arm Length:
135 mm
5. Temple Arm Length:
135 mm

Regular Fitting

A large lens front designed to fit those with an average-sized head.

6 Base Curve Decentered

8 Base Curve Decentered - Max Coverage

Frames with maximum-coverage and wrap that help reduce light leak.

Regular Fit
Regular

Forgot Your Ruler?

Use this handy guide to gauge the fit you're looking for.

S
M

All the Way?

You might be looking for a small or medium frame.

M
L

Middle Pegs?

You might be looking for a medium or large frame.

XL

Last Two Pegs?

You might be looking for an x-large frame.

Blue lens

Blue Mirror

Best for bright, full-sun situations on the open water and offshore.

  • Gray Base
  • 10% light transmission

Optimal usage

  • Boating and fishing in deep water
  • Open reflective water
  • Harsh sun

Costa 580® lenses

Costa 580® lenses were designed by in-house light spectrum experts to enhance colors because standard sunglass lenses fell short.

The lens' multipatented technology
manages light by:

  • Absorbing Harmful High-Energy Blue Light (HEV)
  • Enhancing Reds, Greens, and Blues
  • Filtering Out Harsh Yellow
Without lenses With lenses
580® Polarized Lenses

580® lightwave glass

Costa 580G Lightwave Glass
  • C-Wall® Molecular Bond
  • Glass Layer
  • Encapuslated Mirror
  • Polarized Film
  • Glass Layer
  • C-Wall® Molecular Bond
Exploded view of 580G lens layers

Superior clarity & Scratch-resistance

  • Glass Provides The Best Clarity In Material
  • Encapsulated Mirrors (Between Layers Of Glass) Are Scratch-Proof
  • 20% Thinner And 22% Lighter Than Average Polarized Glass

U.S. PATENT NO. 6.334.680
U.S. PATENT NO. 6.604.824


580® lightwave Polycarbonate

Costa 580G Lightwave Polycarbonate
  • C-Wall® Molecular Bond
  • Mirror (Optional)
  • Polycarbonate Lens
  • Polarized Film
  • Polycarbonate Lens
  • C-Wall® Molecular Bond
Exploded view of 580P lens layers

Lightweight, Impact-Resistant

  • Polycarbonate & are your lightest and most durable lens material options
  • C-WALL® is a molecular bond which is scratch-resistant

U.S. PATENT NO. 7.506.977

Tailfin

Tailfin

Costa Case

Cleaning Cloth

JOIN THE COSTA CREW AND

Along with our exclusive benefits:

Enter your email to join the Costa Crew

By clicking "SIGN UP", you agree to receive our emails for information on the latest brand stories, products, promotions and exclusive offers reserved for our subscribers. See our Privacy Policy for complete details.

We're thrilled to have you on board. You will now receive the latest news & exclusive deals from Costa. Keep an eye on your inbox for a Welcome Gift from us.

Being part of the Crew means celebrating every milestone. Add your birthday and get a gift from us!

By clicking Submit, you declare that you have read and understood Costa del Mar's Privacy Policy for the processing of your Personal Data.

Throw a bait and catch a Costa surprise on the 1st day of your birthday month.

We’re always happy to see people preparing for watery adventures. Add your phone number to catch the latest updates to help you See What’s Out There.

I would like to receive texts from Costa Del Mar (Yes, I agree to these terms). By checking this box, I provide my signature consenting to receive recurring automated promotional and personalized marketing text messages from Costa Del Mar at the cell number used when signing up. Consent is not a condition of any purchase. Reply HELP for help and STOP to cancel. Msg frequency varies. Msg & data rates may apply. View Terms & Privacy

Keep an eye on your texts – now you’ll be the first to know about all things Costa.