Oakley Flak 2.0 XL unisex sunglasses, Prizm Dark Golf Lenses/Matte Black Frame

The Oakley Flak 2.0 XL (OO9188) are a sport performance classic trusted by athletes who demand maximum stability, a wide field of view, and secure fit even during high-intensity activity. Built on Oakley's acclaimed Flak platform, the XL edition increases lens height for greater coverage and superior peripheral vision — a decisive advantage during a golf swing, a cycling sprint, or a trail run. Fitted with Prizm™ Dark Golf lenses in a sleek Matte Black frame, this unisex model delivers purpose-built optical performance on the fairway while remaining versatile enough for everyday active wear.

Key Features

• O Matter™ Frame: Lightweight, stress-resistant frame material engineered for all-day comfort without adding bulk.
• XL Lens Coverage: Taller lens height provides enhanced coverage and broader peripheral vision compared to the standard Flak 2.0.
• Prizm™ Dark Golf Lenses: Golf-specific Prizm lens tuned to boost green contrasts, surface texture, and depth perception on the course.
• Unobtainium™ Grip: Earsocks and nose pads that increase grip when wet, keeping the frame securely in place during activity.
• High Definition Optics™ (HDO™): 8.75 base lens curvature with HDO™ for razor-sharp clarity across every millimeter of the lens.
• 3-Point Fit: Frame geometry holds lenses in precise optical alignment for distortion-free vision.
• Impact Protection: Polycarbonate lenses meet or exceed ANSI Z87.1 standards for high-mass and high-velocity impact resistance.
• 100% UV Protection: Plutonite® lens material filters out 100% of UVA, UVB, and UVC radiation and harmful blue light up to 400 nm.

What's in the Box

• Unisex sunglasses — Oakley Flak 2.0 XL, Matte Black / Prizm Dark Golf (OO9188-90)
• Protective hard case (soft vault)
• Microfiber cleaning bag / pouch
• Spare nose pads

Technology in Detail

Prizm™ Golf Lenses — How They Work on the Course

To play golf at your best, you need to accurately perceive light transitions across the course, judge distances with precision, and develop a sharp eye for reading green surfaces. Prizm™ Golf lenses address every one of these demands through their sport-specific wavelength tuning.

Conventional sunglasses simply reduce the overall brightness of the scene — like turning down a volume control. They dim everything equally, which means you lose the fine colour differentiation needed to read a subtle slope or distinguish a closely-mown fairway from the rough. Prizm™ works more like a stereo equaliser: it independently controls specific bands of the visible spectrum, amplifying the wavelengths most useful to the golfer while suppressing those that create visual noise.

On the green, the Prizm™ Dark Golf lens separates the overlapping shades of green that ordinarily blend together under bright sunlight, making grain direction, surface texture, and gentle undulations immediately apparent. Away from the green, it enhances the contrast between the sky, sand bunkers, and fairway grass so that every element of the course reads clearly and distinctly.

• Detects surface changes and slope variations that would typically go unnoticed with standard lenses.
• Contrast enhancement allows you to distinguish different grass quality and texture across the fairway and green.
• Separation of green shadows improves perception of light transitions and undulations on the course.
• Optimises your ability to track and follow the ball throughout its flight.
• Every Prizm™ lens provides 100% protection against UVA, UVB, UVC, and harmful blue light up to 400 nm.

Interested in Other Oakley Variants?

Oakley offers the Flak 2.0 XL in a wide range of frame colours and lens technologies — including polarised options, Iridium™ coatings, and the full Prizm™ spectrum from road cycling to trail running to snow. The lens is also available with Oakley Authentic Prescription inserts, making it a practical choice for golfers and athletes who require vision correction.