Price Paid:  $120.00 at REI

Summary:
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:
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.

Similar Products Used:
Serengeti, Pacific Trader, many others

Price Paid:  $0.00

Summary:
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.

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.

Similar Products Used:
Oakley Pro M frame w/prescription lenses
Briko prescription frames/lenses