Today we're comparing two similar yet distinct Oakley bestsellers—the Flak 2.0 and Flak 2.0 XL. Are you having trouble figuring out what the difference is? Let us explain below!

Table of Contents

1. Video Review
2. Oakley Flak 2.0 vs. Oakley Flak 2.0 XL
2.1. Similarities
2.2. Differences
2. Prescription Oakley Flak 2.0 Sunglasses at SportRx

Video Review

Oakley Flak 2.0 vs. Oakley Flak 2.0 XL


The most important thing to know is that the frame chassis is the same. There is no difference in the frame once you remove the lenses. Both the Oakley Flak 2.0 and the Flak 2.0 XL feature an identical frame chassis made of O-Matter material, with Unobtainium nose pads and temples for maximum grip, and feature Oakley's comfortable Three-Point Fit system.

Oakley Flak 2.0

Oakley Flak 2.0 in Matte Black

One thing to note here is that the Flak 2.0 has been discontinued in its non-prescription format and is no longer available for purchase. However, if you love the non-XL lens shape and you already have the frame, you can still buy the Flak 2.0 replacement lenses through SportRx.


The only difference between the Flak 2.0 and the Flak 2.0 XL is the lens shape. You might think, because of the XL in the name, that the Flak 2.0 XL is a larger frame size, but it's not. The "XL" in "Flak 2.0 XL" refers to its extended lenses. This shape is the more popular choice and is designed to provide extra coverage and a more seamless transition to looking through the bottom of your lens, something that proves preferable for sports. As you can see in the picture below, the XL lens shape features a distinct curve at the bottom to avoid any uncomfortable contact with your cheeks and it offers slightly wider peripheral coverage.

oakley flak 2.0 x sunglasses in matte black with prizm trail torch red lenses

Oakley Flak 2.0 XL in Matte Black with PRIZM Trail Torch Lenses

Shop Oakley Flak 2.0 XL

Another thing we love talking about for the Flak 2.0 XL is that we at SportRx got to collaborate with Oakley for an exclusive colorway, Matte Carbon. This colorway is only available in this frame, and you can only buy it from SportRx!

We've had some customers who prefer the look and size of the non-XL lens shape. If that's you and you don't already have the frame, there is no need to fret! Since the Flak 2.0 XL features interchangeable lenses and uses the same frame chassis for the Flak 2.0 lens shape, you can order the Flak 2.0 XL and then order the replacement lenses for the Flak 2.0. You get where we're going with this. Once you have all the pieces, you just plug and play! To make it even simpler for you, you can reach out to our friendly, knowledgeable Sport Opticians to take care of all the legwork for you to get you in exactly what you want.

Prescription Oakley Flak 2.0 Sunglasses at SportRx

That's about it for the comparison between these two Oakley frames. Need prescription Oakley sunglasses? Done. When you shop with us, you’ll find video guides and tooltips throughout the build process as you customize the perfect pair. An answer to all your questions is at your fingertips, and if you want to chat with an expert, Contact Us. We’ll put you in touch with one of our friendly in-house opticians who can help you build your prescription Oakley sunglasses.

Ditch risky online shopping with the See Better Guarantee. Try your sunglasses for 45 days. If you’re not satisfied, send them back. Get a full refund, exchange, or credit towards a better pair. And return shipping? Covered. Get your pair of prescription Oakley sunglasses at SportRx today!

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