While the M Frame boasts a hybrid lens, Oakley's Flak Jacket is the true hybrid of the big O's offerings. It has feet firmly set in both the sport and lifestyle camps. It looks like it belongs on your face while riding, while hanging out, and for that hybrid of sport and standing around, golf. Oakley has updated the lens technology for Flak Jacket and now offers it with Iridium lenses.As you can imagine, you have all of Oakley's technology working for you here. The O Matter frame is lightweight, durable, and comfortable. The Unobtanium nose piece and ear socks help make that three-point fit as secure as wearing full-face goggles. High Definition Optics on Plutonite lenses offer great clarity, and the lenses are coated with a hydrophobic and oleophobic solution. These are features on all Oakley's sport glasses; they haven't skimped just because the look is fashionable.The Oakley Flak Jacket Iridium comes with a Jet Black frame and Black Iridium lenses. Black Iridium is a dark, neutral base lens with a mirror coating. It has 10% light transmission, meaning it is best used on extremely sunny days. It comes with a hard case and a soft bag, the latter for cleaning and stowing the glasses in a pocket. There are also two sets of nose pieces to customize the fit.
Strengths: They stick to your face like they're glued on.
Lenses are easy to change.
Weaknesses: Price, but it's relatively easy to get at least a 20% discount on eBay or when REI has member sales.
These sunglasses are great. The optics are first rate, the fit is great and they look cool. I am a heavy sweater, but the Flak frame is designed to channel sweat off to the side so none gets on the lenses. These are the first shades I've had that don't get covered with streaks of sweat.
Strengths: Excellent fit, superior prescription lens quality, looks, interchangeable lenses
Weaknesses: A little pricey, but they will last a long time (as my Pro M frames did) so it is a good investment.
I mail ordered the Flak Jackets with prescription lenses to replace a pair of scrip Pro M frames that I have been riding with for 5 years.
These are the best lenses I have ever ridden with. The quality of the prescription lenses is second-to-none.
The super-comfortable frame hugs the face and stays in place no matter what. They fit the eye sockets extremely well and provide awesome coverage at speed and in rain. They fit well under my helmet straps.
I purchased an additional set of lenses which are super easy to change.