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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.

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.

Middles is a laid-back staple from the Del Mar Series, designed for effortless style from beach days to everyday wear. The round unisex shape is crafted from lightweight bio-acetate with a 4-base curve that feels natural and easygoing. With signature Del Mar detailing and a versatile fit, Middles brings a clean, coastal aesthetic to any lineup. A simple, timeless frame made for a life lived near the water.

Model name: Middles
Item no: 6S2018 201806 51-23
Frame color: Sunset Blush
Lens color: Rose
Lens material: Polarized Glass (580G)
Frame fit: Regular
Size: S
Lens curve: Base 4.25
Size Fit Guide 1 Size Fit Guide 2
S
1. Frame Width: 128 mm
2. Bridge Width: 23 mm
3. Lens Width: 51 mm
4. Lens Height: 44.8 mm
5. Temple Arm Length: 140 mm

Regular Fitting

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

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.

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

Middles

Middles

Cork Case

Costa Soft Case