Oakley FLAK 2.0 XL unisex sunglasses, Prizm Dark Golf lenses/ Steel Frame

The Oakley Flak 2.0 XL delivers a standard-size frame with enhanced lens coverage, taking performance and style to the next level. Every millimeter of peripheral vision is optimized through High Definition Optics™ in a durable yet lightweight design engineered for athletes who demand more from their eyewear. Fitted with PRIZM Dark Golf lenses, this version is purpose-built for the golf course — enhancing green contrasts, sharpening depth perception, and revealing surface changes that conventional lenses simply miss.

Key Features

• O Matter™ Frame: Lightweight, stress-resistant O Matter™ frame material with ellipse metal icon accents for a refined, sport-ready look.
• Unobtainium™ Fit System: Unobtainium™ earsocks and nosepads increase grip when wet, ensuring the frame stays securely in place during active use.
• 8.75 Base Lens Geometry with HDO™: Optimized lens curvature combined with High Definition Optics™ maximizes peripheral coverage and maintains razor-sharp optical clarity at every angle.
• PRIZM Dark Golf Lenses: Golf-tuned PRIZM™ technology enhances color, contrast, and detail specifically for the course — 22% light transmission ideal for medium-to-bright light conditions.
• Plutonite™ Lens Material: Oakley's proprietary Plutonite™ lens material filters 100% of UVA, UVB, and UVC radiation as well as harmful blue light up to 400 nm.
• ANSI Z87.1 Certified: Meets and exceeds American National Standards Institute standards for optical clarity, visual fidelity, and high-mass/high-velocity impact resistance.
• Prescription-Ready: Compatible with Oakley Authentic Prescription Lenses for consistent quality in fit, form, and function.
• Protective Soft Vault Included: Every pair ships with a protective soft vault case and microfiber bag to keep lenses scratch-free between rounds.

What's in the Box

• Oakley FLAK 2.0 XL sunglasses — Steel / PRIZM Dark Golf (OO9188-9188B2)
• Protective hard case
• Microfiber cleaning bag
• Replacement nose bridges

Technology in Detail

Oakley PRIZM Golf Lenses

What Is PRIZM™?

PRIZM™ is Oakley's proprietary lens technology engineered to fine-tune vision under specific environmental conditions and for specific sports. Rather than simply darkening everything uniformly — as conventional tinted lenses do — PRIZM™ selectively amplifies the wavelengths of color to which the human eye is most sensitive, thereby enhancing contrast and detail in the areas that matter most. It represents the first time in the history of sport optics that lenses have been designed from the ground up for the precise demands of individual activities. By improving color recognition and visual acuity, PRIZM™ technology simultaneously enhances athletic performance and increases safety.

Key Advantages of PRIZM™

• Tunes visual acuity so you can see more cleanly and react faster to what matters.
• Improves color recognition and allows you to focus precisely on your target.
• Optimizes the ability to detect and track moving objects across your full field of vision.
• Enhances optical performance and safety without the compromises associated with conventional lenses.

How Does PRIZM™ Work?

Using specially developed chemical components embedded directly into the lens material, PRIZM™ filters out the optical "noise" in ambient light that impairs color discrimination. Think of it as ultra-precise color tuning — engineered specifically for the light environment of your sport or activity. Just as a professional audio equalizer allows individual frequency bands to be adjusted with precision (rather than simply raising or lowering overall volume), PRIZM™ selectively adjusts individual segments of the visible color spectrum to deliver the exact visual information that athletes need most.

How Is PRIZM™ Different from Other Lenses?

Standard sunglasses simply reduce overall light. Some lenses improve contrast, but they are engineered for broad activity ranges and must therefore make compromises — sacrificing the precise color tuning that specialized sports demand. The equipment and conditions of every sport are unique, and with PRIZM™, the lens responds to those unique demands rather than offering a one-size-fits-all solution. The result is a lens that doesn't just protect — it actively helps you perform.

The Science Behind PRIZM™

Oakley developed PRIZM™ technology using hyperspectral imaging — a technique originally employed by surveillance satellites to analyze light with extraordinary precision. By applying this technology to real-world sporting environments, Oakley's engineers were able to map the exact wavelengths of light present on the golf course, the road, the snow, and beyond. This allowed them to identify precisely which wavelengths to boost and which to suppress in order to maximize the visual performance of athletes in each specific environment. The outcome sets a new standard for the sport optics industry.

Why the Right Colors Matter

Every environment places unique demands on the human visual system. Seeing the world in the right colors means being able to distinguish objects as they truly are — helping you perceive subtle changes in terrain, surface texture, and potential hazards before they become problems. A conventional lens attempts to achieve this simply by adding contrast, but doing so indiscriminately can shift colors in undesirable ways. PRIZM™ achieves a sophisticated color balance: the primary benefit is not only increased contrast but also improved color accuracy and pinpoint visual sharpness. Objects in the peripheral field of vision present a particular challenge because the peripheral retina contains fewer color-sensitive cone cells. By targeting the right wavelengths, PRIZM™ activates the specific cells most important for the demands of each sport and its environment — ensuring that every glance is precise, detailed, and performance-ready.

PRIZM Golf Lenses — On the Course

To play golf at the highest level, you need to accurately read the light transitions across fairways and greens, judge distances reliably, and develop a sharp eye for grass surface texture. With PRIZM Golf lenses, color separation is dramatically improved — making it far easier to distinguish the qualities and grain of putting surfaces when you are on the green. The PRIZM Dark Golf variant is tuned specifically for medium-to-bright light conditions, with 22% light transmission that reduces glare without sacrificing the contrast enhancement the lens provides.

• Reveals surface changes you would otherwise likely overlook with conventional lenses.
• Enhanced contrast allows you to distinguish varying grass quality and green-reading detail.
• By separating shades of green, you gain a clearer perception of light transitions across the course.

Specifications