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Perfect for an afternoon spent beachcombing or voyaging out on the water, Costa's Ballast sunglasses are ready for whatever the day brings. Frameless and almost weightless, these Polarized Costa men's sunglasses boast a durable TR90 nylon and weigh in at a lightweight 16 grams. Whatever watersport or waterside adventure a day on the water brings, Costa's Ballast are always looking to uncover something new.

Model name: Ballast
Item no: BA 11 OGP
Frame color: Shiny Black
Lens color: Gray
Lens material: Polarized Polycarbonate (580P)
Frame fit: Narrow
Size: M
Nosepad adjustable: No
Lens curve: Base 8 Decentered
Size Fit Guide 1 Size Fit Guide 2
M
1. Frame Width: 128.6 mm
2. Bridge Width: 15 mm
3. Lens Width: 60 mm
4. Lens Height: 37 mm
5. Temple Arm Length: 125 mm

Narrow Fitting

A small lens front designed to fit those with a slightly narrow head.

6 Base Curve Decentered

8 Base Curve Decentered - Max Coverage

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

Narrow Fit
Narrow

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 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

Ballast

Ballast

Costa Case

Cleaning Cloth