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Finlet

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Polarized  Bio-based material
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Finlet
Finlet
Finlet
Finlet
Finlet
Finlet
Finlet
Finlet
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Polarized Glass (580G)
Polarized Polycarbonate (580P)  
Size :
​ Check size guide and fit guide
This is the most sold size
Estimated Delivery Date:
 
$281.00
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Premium Polarized 580 Lenses*

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

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100% UV Protection

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

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Scratch Resistant and Durable

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

Finlet is made for those looking for a tool to get the job done. Engineered to perform in the toughest of elements, Finlet features an 8 base wrap and finlet inspired side shields that provide coverage and protection from the elements. Retainer ready temple tips allow users to affix any retainer of their choice to ensure their frames aren't lost while exploring. Finlet was also designed to last. Double injected Hydrolite prevents delamination and ensures a long-lasting, high performing product.

Model name: Finlet
Item no: 6S9118 911801 59-19
Frame color: Matte Black
Lens color: Blue Mirror
Lens material: Polarized Glass (580G)
Frame fit: Regular
Size: L
Lens curve: Base 8 Decentered
Size Fit Guide 1 Size Fit Guide 2
L
1. Frame Width: 134 mm
2. Bridge Width: 19 mm
3. Lens Width: 59 mm
4. Lens Height: 42.6 mm
5. Temple Arm Length: 125 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

Finlet

Finlet

Costa Case

Cleaning Cloth

SPECIAL OFFERS

Free Shipping on orders over $200.
BUY ONE, GET 50% OFF SECOND PAIR
GET UP TO $50 OFF SELECT STYLES
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Backed by Warranty and Repairs

Our leading Warranty and Repair programs help you fix or replace your Costa so you can get back on the water, fast.

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Free Standard Shipping Over $200 Purchases

Get your item(s) in 3-5 business days.

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