The Oakley Flak 2.0 has been a go-to sport frame for many of the world's top athletes. Here at SportRx it is one of our top sellers so we were very excited about the possibility of a lifestyle version coming out. With a semi-rimless design, wrap, and Unobtanium, the design of the Mercenary is obviously inspired by the Flak 2.0 XL. What the Mercenary provides that the Flak doesn't is a slightly more casual look.

*Expected release date: 4/1


The Mercenary is part of the Latitude Collection which bridges the gap between sport and lifestyle. You can take these on the road and be ready for whatever you encounter. See what Sunglass Rob has to say about the differences between the Flak 2.0 and Mercenary.

Oakley Mercenary

mercenary prizm grey

Oakley Mercenary in Polished Black with PRIZM Grey

Shop Oakley Mercenary

Frame Measurements:

  • Lens Width: 70 mm
  • Lens Height: 46 mm
  • Bridge: 17 mm
  • Frame Width: 135 mm
  • Temple Length: 124 mm


Oakley Flak 2.0 XL

flak 2.0 xl prizm trail

Oakley Flak 2.0 XL in Polished Black with PRIZM Trail

Shop Oakley Flak 2.0 XL

Frame Measurements:

  • Lens Width: 59 mm
  • Lens Height: 37 mm
  • Bridge: 16 mm
  • Frame Width: 130 mm
  • Temple Length: 125 mm


Similarities between the Mercenary and Flak 2.0 XL

  • O Matter Frame Construction-Both sunglass frame are constructed of Oakley's proprietary O Matter material. This makes the sunglasses both lightweight and durable enough to meet any of your physical demands.


  • PRIZM Lens Technology-Oakley engineers designed PRIZM lenses to enhance contrast in specific environments. The lenses work by filtering out the noisy colors while simultaneously boosting the colors that our eyes are most sensitive to. There are PRIZM lenses designed for sports, everyday, and a little bit of both so there is an option for you no matter what you want to use your glasses for.


  • Semi-Rimless Frame-Both the Flak 2.0 and Mercenary have semi-rimless frame designs. This allows the lenses to extend and provide more coverage without the bottom of the frame getting in line of sight. The semi-rimless design is preferred for sports because you don't want to sacrifice any of your viewing area to perform at your best.


  • Unobtanium Grip-Oakley's proprietary grip technology, Unobtanium, is featured on the nosepads and temples of the Mercenary and Flak 2.0. Unobtanium gets stickier and tackier the more you sweat. This grip is what truly makes each of these a sport-ready sunglass.


  • Fit- The Mercenary and Flak 2.0 XL are two sunglasses that will fit most peoples faces. However, the Mercenary is probably better for people with a larger head because the lenses are a bit larger than the Flak 2.0 XL. Both sunglasses are available in asian fit.


Differences between the Mercenary and Flak 2.0 XL

  • Aesthetic- The main difference between these models is aesthetics. The double bridge and frame styling of the Mercenary is more along the lines of what would be seen in a lifestyle sunglass. On the flip side, the Flak 2.0 doesn't hide the sport-forward intent in the frame design.


  • Lens Size/shape- The Mercenary has larger lenses than the Flak 2.0 XL. The lens is about 11 mm wider and 10 mm taller. The lens shape on the Mercenary is also a 4x6 twin toric which means that it is more curved on the horizontal plane and flatter on the vertical to give you a slightly more lifestyle look without sacrificing optics.


  • PRIZM Rx options- There is some limitations to the PRIZM rx options on the Mercenary due to the large lens size. It is only available with the following PRIZM polarized lenses: Black, Sapphire, Jade, Ruby, Tungsten, and Deep Water.


Prescription Oakley Sunglasses Online at SportRx!

Did you learn everything you wanted to know about the differences between the Flak 2.0 and the Mercenary? Did you know you can get either of these sunglasses with prescription lenses? Contact one of our certified opticians 7 days a week on live chat or via phone for any of your prescription or non-prescription needs!