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The Oakley Flak 2.0 XL sunglasses deliver serious performance in a lightweight, half-rim design that's become a staple for athletes across running, cycling, golf, and baseball. The "XL" refers to the extended lens shape—taller and wider than the standard Flak 2.0, with a distinctive lower cut that provides maximum coverage while avoiding contact with your cheeks. This is a medium-sized frame (59mm lens width, 133mm temple length) that fits a wide range of face shapes from medium to large.
Built for Performance
Oakley constructed the Flak 2.0 XL with their proprietary O Matter frame material—incredibly durable yet feather-light. The half-rim design keeps weight down without sacrificing strength. What sets this frame apart is the Unobtainium nose pads and ear socks: this grippy material actually increases traction when you sweat, so the sunglasses stay locked in place during hard efforts. Reviewers consistently mention that these don't slip, even when bending over or running in hot conditions.
The frame uses Oakley's Three-Point Fit system, which holds the lenses in precise optical alignment and eliminates pressure points. Combined with the 8.75 base lens curvature and High Definition Optics (HDO), you get distortion-free clarity across your entire field of view. Impact-resistant Plutonite lenses block 100% of UVA, UVB, and UVC rays, plus harmful blue light up to 400nm.
Prizm Lens Technology
Many Flak 2.0 XL models feature Prizm lens technology—Oakley's proprietary system that fine-tunes color and contrast for specific environments. Prizm Road enhances detail on pavement, Prizm Golf helps you read greens and track the ball, Prizm Trail boosts definition on dirt and rocks. Standard, polarized, and photochromic options are all available. Lenses are easy to swap, so you can build a collection for different conditions.
Prescription-Ready
The Flak 2.0 XL is fully compatible with prescription lenses, including single vision, bifocal, and progressive options. Multiple optical labs offer custom Rx lenses for this frame, making it a go-to choice for athletes who need vision correction.
Whether you're logging miles, teeing off, or just need reliable sun protection with an athletic edge, the Oakley Flak 2.0 XL has earned its reputation as one of the most versatile sport sunglasses on the market.
Product Details
Product DetailsModel
0OO9188Shape
Gender
Material
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsColor Code
918804Color Description
Matte Grey SmokeFrame Color
GrayLens Color
Prizm Road
Color Code
918816Color Description
SteelFrame Color
GrayLens Color
Clear To Black Photochromic
Color Code
918803Color Description
Polished WhiteFrame Color
WhiteLens Color
Prizm Outfield
Color Code
918858Color Description
Matte BlackFrame Color
BlackLens Color
Prizm Deep H2o Polarized
Color Code
918872Color Description
Polished BlackFrame Color
BlackLens Color
Prizm Black Polarized
Color Code
918873Color Description
Matte BlackFrame Color
BlackLens Color
Prizm Black
Color Code
918886Color Description
Black CamoFrame Color
BlackLens Color
Prizm Ruby
Color Code
918885Color Description
Matte BlackFrame Color
BlackLens Color
Prizm Grey Polar
Color Code
918881Color Description
Polished WhiteFrame Color
WhiteLens Color
Prizm Black Polarized
Color Code
918892Color Description
Polished WhiteFrame Color
WhiteLens Color
Prizm Jade
Color Code
918893Color Description
Polished WhiteFrame Color
WhiteLens Color
Prizm Ruby
Color Code
918882Color Description
Polished WhiteFrame Color
WhiteLens Color
Prizm Deep H2o Polarized
Color Code
918894Color Description
Polished WhiteFrame Color
WhiteLens Color
Prizm Sapphire
Color Code
918896Color Description
BlackFrame Color
Black
Color Code
918891Color Description
Polished BlackFrame Color
BlackLens Color
Prizm Field
Color Code
918890Color Description
BlackFrame Color
BlackLens Color
Prizm Dark Golf
Color Code
9188A7Color Description
BlackFrame Color
BlackLens Color
Prizm Trail Torch
Color Code
9188A0Color Description
BlueLens Color
Prizm Black
Color Code
9188D6Color Description
Min Matte BlackFrame Color
BlackLens Color
Prizm Black
Color Code
9188E4Color Description
Sf Matte BlackFrame Color
BlackLens Color
Prizm Tungsten
Color Code
9188C5Color Description
Dal Matte BlackFrame Color
BlackLens Color
Prizm Sapphire
Color Code
9188D2Color Description
Kc Matte BlackFrame Color
BlackLens Color
Prizm Ruby
Color Code
9188C8Color Description
Gb Matte BlackFrame Color
BlackLens Color
Prizm Jade
Color Code
9188B2Color Description
SteelLens Color
Prizm Dark Golf
Color Code
9188D3Color Description
Lac Matte BlackFrame Color
BlackLens Color
Prizm Sapphire
Color Code
9188C6Color Description
Den Matte BlackFrame Color
BlackLens Color
Prizm Ruby
Color Code
9188E1Color Description
Oak Matte BlackFrame Color
BlackLens Color
Prizm Black
Color Code
9188E5Color Description
Sea Matte BlackFrame Color
BlackLens Color
Prizm Jade
Color Code
9188E6Color Description
Tb Matte BlackFrame Color
BlackLens Color
Prizm Ruby
Color Code
918876Color Description
Polished WhiteFrame Color
WhiteLens Color
Prizm Black PolarizedLens Features
polarized
Color Code
9188E7Color Description
Ten Matte BlackFrame Color
BlackLens Color
Prizm Sapphire
Color Code
918806Color Description
Polished BlackFrame Color
BlackLens Color
Prizm Trail
Color Code
9188D7Color Description
Ne Matte BlackFrame Color
BlackLens Color
Prizm Black
Size Details
Size DetailsLens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Lens Width
59mmBridge Width
12.00Temple Length
133mmSize
5912-133
Bridge Width
12.00Temple Length
133.00Size
5912-133
Very nice glasses. Would definitely buy from designeroptics.com again!
GREAT sunglasses.
Great glasses for great price. I will
Buy again
Hard to find discontinued style. My favorite style and color at a great price. Definitely recommend Designeroptics.com
Oakley Flak 2.0 Xl 9188 Sunglasses
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Frequently Asked Questions
What's the difference between the Flak 2.0 and Flak 2.0 XL?
The frame is identical—the only difference is the lens shape. The XL features extended lenses that are taller and provide more coverage, with a distinctive curved cut at the bottom to avoid touching your cheeks. The regular Flak 2.0 has a shallower, more rounded lens. Both use the same frame chassis, so lenses are interchangeable between the two models.
Can I get prescription lenses in the Oakley Flak 2.0 XL?
Yes, the Flak 2.0 XL is fully prescription-ready and compatible with single vision, bifocal, and progressive lenses. Multiple optical labs offer custom prescription lenses for this frame (model OO9188), including options with Prizm technology, polarization, and photochromic features.
What face size does the Flak 2.0 XL fit?
The Flak 2.0 XL fits medium to large face shapes. It has a 59mm lens width, 12mm bridge, and 133mm temple length. The XL lens design provides enhanced coverage without the lenses touching your cheeks, and the frame sits close to the face for a secure, athletic fit. If you have a smaller face or high cheekbones, consider the Asian Fit version.
Are the Flak 2.0 XL lenses interchangeable?
Yes, the lenses are designed to be easily swapped. You can purchase replacement lenses in different tints, Prizm technologies, or polarized options to match different activities and light conditions. Authentic Oakley replacement lenses for the Flak 2.0 XL (OO9188) ensure proper fit and optical clarity.
Do the Flak 2.0 XL sunglasses stay in place during sports?
Yes, they're specifically designed for active use. The Unobtainium nose pads and ear socks increase grip when you sweat, and the Three-Point Fit system keeps the frame secure without pressure points. Customer reviews consistently praise the Flak 2.0 XL for staying put during running, cycling, and other high-movement activities.
What is Prizm lens technology in the Flak 2.0 XL?
Prizm is Oakley's proprietary lens technology that enhances color and contrast for specific sports and environments. Prizm Road boosts pavement detail for cycling, Prizm Golf helps you read greens, and Prizm Trail enhances definition on dirt. The technology filters out specific wavelengths to make important details stand out more clearly.
Compare With Similar Frames
How the Oakley Flak 2.0 Xl 9188 Sunglasses stacks up against the closest alternatives we carry.
- Larger lens with 'Extended View' design for maximum peripheral coverage
- Features lens vents to reduce fogging during intense activity
- More aggressive, race-focused aesthetic
- Full-frame design with classic, casual styling suitable for everyday wear
- Larger XL fit for bigger faces while maintaining lifestyle aesthetics
- Available with Prizm lenses for enhanced color and contrast
Read the full comparison
Flak 2.0 XL vs. Radar EV Path: Which Oakley Sport Frame Is Right for You?
If you're choosing between the Oakley Flak 2.0 XL and the Radar EV Path, you're looking at Oakley's two most popular sport performance frames. Both deliver exceptional optics, lightweight durability, and Prizm lens options—but they're designed for slightly different priorities.
The Radar EV Path is the more aggressive choice. Its "Extended View" lens design provides maximum peripheral coverage and features built-in vents to reduce fogging during intense efforts. It's the go-to for serious cyclists, triathletes, and runners who want the largest possible field of view. However, that larger lens makes the Radar EV feel more "goggle-like," and some users find it too race-focused for casual wear or everyday activities.
The Flak 2.0 XL strikes a better balance between performance and versatility. It's lighter, more compact, and fits a wider range of face shapes comfortably. The half-rim design keeps weight down, and the extended XL lens still provides excellent coverage without the bulk of the Radar EV. Forum users consistently note that the Flak 2.0 XL is easier to wear casually and works well for sports like golf and baseball where you don't need maximum wrap coverage.
Bottom line: Choose the Radar EV Path if you prioritize maximum coverage and don't mind a more aggressive look. Choose the Flak 2.0 XL if you want a lighter, more versatile frame that performs exceptionally well across multiple sports and settings.
Flak 2.0 XL vs. Holbrook XL: Sport vs. Lifestyle
The Holbrook XL is a completely different animal—it's a full-frame lifestyle sunglass with classic styling, while the Flak 2.0 XL is purpose-built for athletic performance. If you're debating between them, the question is simple: do you need sport-specific features, or do you want a casual frame that happens to be large?
The Flak 2.0 XL's half-rim design, Unobtainium grip, and Three-Point Fit make it ideal for running, cycling, and any activity where the sunglasses need to stay put. The Holbrook XL, on the other hand, is heavier and lacks those performance features—but it looks great off the field and works better for everyday wear.
Our recommendation: If you're active and need sunglasses that perform during sports, the Flak 2.0 XL is the clear choice. If you want a larger casual frame with Oakley quality and Prizm lenses, go with the Holbrook XL.
At a Glance
Oakley Radar EV Path 9208 Sunglasses
Pros:
- Larger lens with 'Extended View' design for maximum peripheral coverage
- Features lens vents to reduce fogging during intense activity
- More aggressive, race-focused aesthetic
- 22% light transmission vs. Flak's 15% in comparable Prizm lenses
Cons:
- Larger, more 'goggle-like' fit that some find too aggressive for casual wear
- Slightly heavier and more front-heavy than the Flak 2.0 XL
- Higher price point ($147.92–$297 vs. $146.66–$267)
- Less versatile for everyday use outside of sports
Oakley Holbrook XL 9417 Sunglasses
Pros:
- Full-frame design with classic, casual styling suitable for everyday wear
- Larger XL fit for bigger faces while maintaining lifestyle aesthetics
- Available with Prizm lenses for enhanced color and contrast
- More versatile for non-sport settings
Cons:
- Heavier full-frame construction compared to the Flak's lightweight half-rim
- Lacks the sport-specific features like Unobtainium grip and athletic fit
- Not optimized for high-movement activities like running or cycling
- Less peripheral coverage than the Flak 2.0 XL's wrap design