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Choosing the right eyewear can be a complex process. This guide will help you find your best match. All eyewear has different functional and aesthetic characteristics, so we use three pieces of information to determine the following:
If you need help finding the right size, try our Size Advisor:
The size of the frame counts as functional information, which is defined by one principal number:
This information defines the following sizes:
| Hinge to hinge (in) | Hinge to hinge (mm) | Size |
|---|---|---|
| <4.8 | <121 | XXS |
| 4.8-4.9 | 121-124 | XS |
| 4.9-5 | 125-128 | S |
| 5.1-5.2 | 129-132 | M |
| 5.3-5.4 | 133-136 | L |
| 5.4-5.5 | 137-140 | XL |
| >5.5 | >>140 | XXL |
Try our Size Advisor and we'll measure it for you! Or, you can use a ruler to measure the hinge-to-hinge distance of a pair of glasses that you already own.
If you already own a pair of glasses, you’ll find numbers engraved on the inside of the eyewear temple. These numbers indicate the following:
The first number is the model name, followed by the lens width and bridge width.
There is usually a third number that represents the temple length, or the measurement of the "arms" of your frame.
Sometimes there is a fourth number that indicates the lens height.
Each of these numbers is measured in mm.
Fitting is aesthethical information which determines the amount of face coverage for a given size.
The frames shown in the image are all the same size but each one has a different fit.
The three possible fittings are:
The four bridge and nosepads options are:
COSTA
6S9129 Fly Line
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Choose your vision need and add your prescription.
Select lens type and thickness, then add specialized treatments.
Enjoy through aftercare with our 30 day happiness guarantee.
Frame
Material: Bio-Based Injected
Shape: Rectangle
Color: Matte Black
Product measurements
Size: 64 - 13 One size only
Lens width: 64 mm / 2.52 in
Bridge width: 13 mm / 0.51 in
Temple length: 120 mm / 4.72 in
Lens
Treatment: Mirror
Color: Green Mirror
Discover precision and performance with the Costa 6S9129 Fly Line sunglasses. Crafted for watermen, these full-rim rectangular frames deliver sleek structure and reliable durability with their injected plastic design. These Costa sunglasses feature polarized green mirrored lenses that cut glare and enhance clarity, offering advanced UVA/UVB protection for dynamic light conditions. Featuring an 8-base wrap for superior coverage and double-injected hydrolite at the nose and temple tips for secure comfort, these shades are ideal polarized sunglasses for men ready for the water and beyond. Retainer-ready temple tips ensure every detail is built for unwavering focus. Born on the water, Fly Line redefines coastal adventure.
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